---
OA_place: repository
OA_type: free access
_id: '21174'
abstract:
- lang: eng
  text: UTe2 exhibits the remarkable phenomenon of re-entrant superconductivity, whereby
    the zero-resistance state reappears above 40 tesla after being suppressed with
    a field of around 10 tesla. One potential pairing mechanism, invoked in the related
    re-entrant superconductors UCoGe and URhGe, involves transverse fluctuations of
    a ferromagnetic order parameter. However, the requisite ferromagnetic order -
    present in both UCoGe and URhGe - is absent in UTe2, and magnetization measurements
    show no sign of strong fluctuations. Here, we measure the magnetotropic susceptibility
    of UTe2 across two field-angle planes. This quantity is sensitive to the magnetic
    susceptibility in a direction transverse to the applied magnetic field - a quantity
    that is not accessed in conventional magnetization measurements. We observe a
    very large decrease in the magnetotropic susceptibility over a broad range of
    field orientations, indicating a large increase in the transverse magnetic susceptibility.
    The three superconducting phases of UTe2, including the high-field re-entrant
    phase, surround this region of enhanced susceptibility in the field-angle phase
    diagram. The strongest transverse susceptibility is found near the critical end
    point of the high-field metamagnetic transition, suggesting that quantum critical
    fluctuations of a field-induced magnetic order parameter may be responsible for
    the large transverse susceptibility, and may provide a pairing mechanism for field-induced
    superconductivity in UTe2.
acknowledged_ssus:
- _id: NanoFab
acknowledgement: Thanks to Salvatore Bagiante, Evgeniia Volobueva, Lubuna Shafeek,
  Ali Bangura and Zoltan Kollo.
article_processing_charge: Yes
author:
- first_name: Kimberly A
  full_name: Modic, Kimberly A
  id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
  last_name: Modic
  orcid: 0000-0001-9760-3147
citation:
  ama: Modic KA. Research data for “Giant transverse magnetic fluctuations at the
    edge of re-entrant superconductivity in UTe2.” 2026. doi:<a href="https://doi.org/10.15479/AT-ISTA-21174">10.15479/AT-ISTA-21174</a>
  apa: Modic, K. A. (2026). Research data for “Giant transverse magnetic fluctuations
    at the edge of re-entrant superconductivity in UTe2.” Institute of Science and
    Technology Austria. <a href="https://doi.org/10.15479/AT-ISTA-21174">https://doi.org/10.15479/AT-ISTA-21174</a>
  chicago: Modic, Kimberly A. “Research Data for ‘Giant Transverse Magnetic Fluctuations
    at the Edge of Re-Entrant Superconductivity in UTe2.’” Institute of Science and
    Technology Austria, 2026. <a href="https://doi.org/10.15479/AT-ISTA-21174">https://doi.org/10.15479/AT-ISTA-21174</a>.
  ieee: K. A. Modic, “Research data for ‘Giant transverse magnetic fluctuations at
    the edge of re-entrant superconductivity in UTe2.’” Institute of Science and Technology
    Austria, 2026.
  ista: Modic KA. 2026. Research data for ‘Giant transverse magnetic fluctuations
    at the edge of re-entrant superconductivity in UTe2’, Institute of Science and
    Technology Austria, <a href="https://doi.org/10.15479/AT-ISTA-21174">10.15479/AT-ISTA-21174</a>.
  mla: Modic, Kimberly A. <i>Research Data for “Giant Transverse Magnetic Fluctuations
    at the Edge of Re-Entrant Superconductivity in UTe2.”</i> Institute of Science
    and Technology Austria, 2026, doi:<a href="https://doi.org/10.15479/AT-ISTA-21174">10.15479/AT-ISTA-21174</a>.
  short: K.A. Modic, (2026).
contributor:
- contributor_type: project_member
  first_name: Valeska
  id: 467ed36b-dc96-11ea-b7c8-b043a380b282
  last_name: Zambra
  orcid: 0000-0002-8806-5719
corr_author: '1'
date_created: 2026-02-09T12:04:20Z
date_published: 2026-02-19T00:00:00Z
date_updated: 2026-02-19T10:13:30Z
day: '19'
ddc:
- '530'
department:
- _id: KiMo
doi: 10.15479/AT-ISTA-21174
file:
- access_level: open_access
  checksum: 53157d908fba663275c2b8dc6ee84fdb
  content_type: text/plain
  creator: kmodic
  date_created: 2026-02-19T07:38:15Z
  date_updated: 2026-02-19T07:38:15Z
  file_id: '21332'
  file_name: README.txt
  file_size: 1347
  relation: main_file
  success: 1
- access_level: open_access
  checksum: b2c8ca5620ee9c181a42082068d3d73c
  content_type: application/zip
  creator: kmodic
  date_created: 2026-02-19T07:39:03Z
  date_updated: 2026-02-19T07:39:03Z
  file_id: '21333'
  file_name: processed_data_bc_plane_Fig2d.zip
  file_size: 534853
  relation: main_file
  success: 1
- access_level: open_access
  checksum: 976bf113da4b1133313f0b292e71289f
  content_type: application/zip
  creator: kmodic
  date_created: 2026-02-19T07:39:07Z
  date_updated: 2026-02-19T07:39:07Z
  file_id: '21334'
  file_name: processed_data_ac_plane_Fig2c.zip
  file_size: 427144
  relation: main_file
  success: 1
file_date_updated: 2026-02-19T07:39:07Z
has_accepted_license: '1'
keyword:
- transverse magnetic susceptibility
- magnetotropic
- superconductivity
- magnetic fluctuations
month: '02'
oa: 1
oa_version: Published Version
project:
- _id: bd968c70-d553-11ed-ba76-cde40b0aba64
  grant_number: '101078696'
  name: Gaining leverage with spin liquids and superconductors
publisher: Institute of Science and Technology Austria
related_material:
  link:
  - relation: preprint
    url: https://arxiv.org/pdf/2506.08984
status: public
title: Research data for "Giant transverse magnetic fluctuations at the edge of re-entrant
  superconductivity in UTe2"
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: research_data
user_id: 68b8ca59-c5b3-11ee-8790-cd641c68093d
year: '2026'
...
---
OA_place: repository
OA_type: green
_id: '18654'
abstract:
- lang: eng
  text: "We compute the rotational anisotropy of the free energy of \U0001D6FC−RuCl3
    in an external magnetic field. This quantity, known as the magnetotropic susceptibility,
    \U0001D458, relates to the second derivative of the free energy with respect to
    the angle of rotation. We have used approximation-free, auxiliary-field quantum
    Monte Carlo simulations for a realistic model of \U0001D6FC−RuCl3 and optimized
    the path integral to alleviate the negative sign problem. This allows us to reach
    temperatures down to 30K—an energy scale below the dominant Kitaev coupling. We
    demonstrate that the magnetotropic spin susceptibility in this model of \U0001D6FC−RuCl3
    displays scaling behavior \U0001D458=\U0001D447⁢\U0001D453⁡(\U0001D435/\U0001D447)
    at high temperatures. Once the uniform susceptibility departs from the Curie law
    (i.e., at the energy scale of the exchange interactions), it appears to transition
    to an emergent scalinglike behavior, characterized by a different function \U0001D453
    at lower temperatures, stemming from the locality of torque fluctuations. We observe
    a remarkable numerical match between experiment and simulations and we also find
    qualitative agreement with the pure Kitaev model. In comparison, for the XXZ Heisenberg
    Hamiltonian, the scaling \U0001D458=\U0001D447⁢\U0001D453⁡(\U0001D435/\U0001D447)
    breaks down at a temperature scale where the uniform spin susceptibility deviates
    from the Curie law and never reemerges at low temperatures."
acknowledgement: We gratefully acknowledge the Gauss Centre for Supercomputing e.V.
  for funding this project by providing computing time on the GCS Supercomputer SUPERMUC-NG
  at the Leibniz Supercomputing Centre (Project No. pn73xu) as well as the scientific
  support and HPC resources provided by the Erlangen National High Performance Computing
  Center (NHR@FAU) of the Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
  under the NHR Project b133ae. NHR funding is provided by federal and Bavarian state
  authorities. NHR@FAU hardware is partially funded by the German Research Foundation
  (DFG) – 440719683. T.S. thanks funding from the Deutsche Forschungsgemeinschaft
  under Grant No. SA 3986/1-1 as well as the Würzburg-Dresden Cluster of Excellence
  on Complexity and Topology in Quantum Matter ct.qmat (EXC 2147, Project ID 390858490).
  F.F.A. acknowledges financial support from the German Research Foundation (DFG)
  under the Grant AS 120/16-1 (Project No. 493886309) that is part of the collaborative
  research project SFB Q-M&S funded by the Austrian Science Fund (FWF) F 86. K.A.M.
  thanks financial support from the Austrian Science Fund, SFB F 86, Q-M&S.
article_number: L201114
article_processing_charge: No
article_type: letter_note
arxiv: 1
author:
- first_name: Toshihiro
  full_name: Sato, Toshihiro
  last_name: Sato
- first_name: B. J.
  full_name: Ramshaw, B. J.
  last_name: Ramshaw
- first_name: Kimberly A
  full_name: Modic, Kimberly A
  id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
  last_name: Modic
  orcid: 0000-0001-9760-3147
- first_name: Fakher F.
  full_name: Assaad, Fakher F.
  last_name: Assaad
citation:
  ama: 'Sato T, Ramshaw BJ, Modic KA, Assaad FF. Scale-invariant magnetic anisotropy
    in α-RuCl3: A quantum Monte Carlo study. <i>Physical Review B</i>. 2024;110(20).
    doi:<a href="https://doi.org/10.1103/PhysRevB.110.L201114">10.1103/PhysRevB.110.L201114</a>'
  apa: 'Sato, T., Ramshaw, B. J., Modic, K. A., &#38; Assaad, F. F. (2024). Scale-invariant
    magnetic anisotropy in α-RuCl3: A quantum Monte Carlo study. <i>Physical Review
    B</i>. American Physical Society. <a href="https://doi.org/10.1103/PhysRevB.110.L201114">https://doi.org/10.1103/PhysRevB.110.L201114</a>'
  chicago: 'Sato, Toshihiro, B. J. Ramshaw, Kimberly A Modic, and Fakher F. Assaad.
    “Scale-Invariant Magnetic Anisotropy in α-RuCl3: A Quantum Monte Carlo Study.”
    <i>Physical Review B</i>. American Physical Society, 2024. <a href="https://doi.org/10.1103/PhysRevB.110.L201114">https://doi.org/10.1103/PhysRevB.110.L201114</a>.'
  ieee: 'T. Sato, B. J. Ramshaw, K. A. Modic, and F. F. Assaad, “Scale-invariant magnetic
    anisotropy in α-RuCl3: A quantum Monte Carlo study,” <i>Physical Review B</i>,
    vol. 110, no. 20. American Physical Society, 2024.'
  ista: 'Sato T, Ramshaw BJ, Modic KA, Assaad FF. 2024. Scale-invariant magnetic anisotropy
    in α-RuCl3: A quantum Monte Carlo study. Physical Review B. 110(20), L201114.'
  mla: 'Sato, Toshihiro, et al. “Scale-Invariant Magnetic Anisotropy in α-RuCl3: A
    Quantum Monte Carlo Study.” <i>Physical Review B</i>, vol. 110, no. 20, L201114,
    American Physical Society, 2024, doi:<a href="https://doi.org/10.1103/PhysRevB.110.L201114">10.1103/PhysRevB.110.L201114</a>.'
  short: T. Sato, B.J. Ramshaw, K.A. Modic, F.F. Assaad, Physical Review B 110 (2024).
date_created: 2024-12-15T23:01:50Z
date_published: 2024-11-15T00:00:00Z
date_updated: 2025-09-09T11:48:35Z
day: '15'
department:
- _id: KiMo
doi: 10.1103/PhysRevB.110.L201114
external_id:
  arxiv:
  - '2312.03080'
  isi:
  - '001447562900001'
intvolume: '       110'
isi: 1
issue: '20'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2312.03080
month: '11'
oa: 1
oa_version: Preprint
project:
- _id: 34ac8b51-11ca-11ed-8bc3-86c15daa9f8f
  grant_number: F8607
  name: 'Center for Correlated Quantum Materials and Solid State Quantum Systems:
    Scale- invariance in entangled quantum spin systems'
publication: Physical Review B
publication_identifier:
  eissn:
  - 2469-9969
  issn:
  - 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Scale-invariant magnetic anisotropy in α-RuCl3: A quantum Monte Carlo study'
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 110
year: '2024'
...
---
_id: '15003'
abstract:
- lang: eng
  text: Magnetic frustration allows to access novel and intriguing properties of magnetic
    systems and has been explored mainly in planar triangular-like arrays of magnetic
    ions. In this work, we describe the phosphide Ce6Ni6P17, where the Ce+3 ions accommodate
    in a body-centered cubic lattice of Ce6 regular octahedra. From measurements of
    magnetization, specific heat, and resistivity, we determine a rich phase diagram
    as a function of temperature and magnetic field in which different magnetic phases
    are found. Besides clear evidence of magnetic frustration is obtained from entropy
    analysis. At zero field, a second-order antiferromagnetic transition occurs at
    TN1≈1 K followed by a first-order transition at TN2≈0.45 K. With magnetic field
    new magnetic phases appear, including a weakly first-order transition which ends
    in a classical critical point and a third magnetic phase. We also study the exact
    solution of the spin-1/2 Heisenberg model in an octahedron which allows us a qualitative
    understanding of the phase diagram and compare with the experimental results.
acknowledgement: "The authors thank Bernardo Pentke for the SEM micrographs (Departamento
  Fisicoquímica de Materiales CABCNEA). We are indebted to Julián Sereni for useful
  discussions. D. G. F. acknowledges financial support provided by Agencia I+D+i,
  Argentina, Grant No. PICT-2021-I-INVI00852 and Universidad Nacional de Cuyo (SIIP)
  Grant No. 06/C018-T1. A. A. A. acknowledges financial support provided by PICT 2018-01546
  and PICT 2020A-03661 of the\r\nAgencia I+D+i. "
article_number: '054405'
article_processing_charge: No
article_type: original
author:
- first_name: D. G.
  full_name: Franco, D. G.
  last_name: Franco
- first_name: R.
  full_name: Avalos, R.
  last_name: Avalos
- first_name: D.
  full_name: Hafner, D.
  last_name: Hafner
- first_name: Kimberly A
  full_name: Modic, Kimberly A
  id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
  last_name: Modic
  orcid: 0000-0001-9760-3147
- first_name: Yu
  full_name: Prots, Yu
  last_name: Prots
- first_name: O.
  full_name: Stockert, O.
  last_name: Stockert
- first_name: A.
  full_name: Hoser, A.
  last_name: Hoser
- first_name: P. J.W.
  full_name: Moll, P. J.W.
  last_name: Moll
- first_name: M.
  full_name: Brando, M.
  last_name: Brando
- first_name: A. A.
  full_name: Aligia, A. A.
  last_name: Aligia
- first_name: C.
  full_name: Geibel, C.
  last_name: Geibel
citation:
  ama: Franco DG, Avalos R, Hafner D, et al. Frustrated magnetism in octahedra-based
    Ce6 Ni6 P17. <i>Physical Review B</i>. 2024;109(5). doi:<a href="https://doi.org/10.1103/PhysRevB.109.054405">10.1103/PhysRevB.109.054405</a>
  apa: Franco, D. G., Avalos, R., Hafner, D., Modic, K. A., Prots, Y., Stockert, O.,
    … Geibel, C. (2024). Frustrated magnetism in octahedra-based Ce6 Ni6 P17. <i>Physical
    Review B</i>. American Physical Society. <a href="https://doi.org/10.1103/PhysRevB.109.054405">https://doi.org/10.1103/PhysRevB.109.054405</a>
  chicago: Franco, D. G., R. Avalos, D. Hafner, Kimberly A Modic, Yu Prots, O. Stockert,
    A. Hoser, et al. “Frustrated Magnetism in Octahedra-Based Ce6 Ni6 P17.” <i>Physical
    Review B</i>. American Physical Society, 2024. <a href="https://doi.org/10.1103/PhysRevB.109.054405">https://doi.org/10.1103/PhysRevB.109.054405</a>.
  ieee: D. G. Franco <i>et al.</i>, “Frustrated magnetism in octahedra-based Ce6 Ni6
    P17,” <i>Physical Review B</i>, vol. 109, no. 5. American Physical Society, 2024.
  ista: Franco DG, Avalos R, Hafner D, Modic KA, Prots Y, Stockert O, Hoser A, Moll
    PJW, Brando M, Aligia AA, Geibel C. 2024. Frustrated magnetism in octahedra-based
    Ce6 Ni6 P17. Physical Review B. 109(5), 054405.
  mla: Franco, D. G., et al. “Frustrated Magnetism in Octahedra-Based Ce6 Ni6 P17.”
    <i>Physical Review B</i>, vol. 109, no. 5, 054405, American Physical Society,
    2024, doi:<a href="https://doi.org/10.1103/PhysRevB.109.054405">10.1103/PhysRevB.109.054405</a>.
  short: D.G. Franco, R. Avalos, D. Hafner, K.A. Modic, Y. Prots, O. Stockert, A.
    Hoser, P.J.W. Moll, M. Brando, A.A. Aligia, C. Geibel, Physical Review B 109 (2024).
date_created: 2024-02-18T23:01:01Z
date_published: 2024-02-01T00:00:00Z
date_updated: 2025-09-04T12:05:01Z
day: '01'
department:
- _id: KiMo
doi: 10.1103/PhysRevB.109.054405
external_id:
  isi:
  - '001198571800008'
intvolume: '       109'
isi: 1
issue: '5'
language:
- iso: eng
month: '02'
oa_version: None
publication: Physical Review B
publication_identifier:
  eissn:
  - 2469-9969
  issn:
  - 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Frustrated magnetism in octahedra-based Ce6 Ni6 P17
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 109
year: '2024'
...
---
_id: '13257'
abstract:
- lang: eng
  text: The magnetotropic susceptibility is the thermodynamic coefficient associated
    with the rotational anisotropy of the free energy in an external magnetic field
    and is closely related to the magnetic susceptibility. It emerges naturally in
    frequency-shift measurements of oscillating mechanical cantilevers, which are
    becoming an increasingly important tool in the quantitative study of the thermodynamics
    of modern condensed-matter systems. Here we discuss the basic properties of the
    magnetotropic susceptibility as they relate to the experimental aspects of frequency-shift
    measurements, as well as to the interpretation of those experiments in terms of
    the intrinsic properties of the system under study.
acknowledgement: "We thank Aharon Kapitulnik, Philip Moll, and Andreas Rydh for illuminating
  discussions. The work at the Los Alamos National Laboratory is supported by National
  Science Foundation Cooperative Agreements No. DMR-1157490 and No. DMR-1644779, the
  state of Florida, and the U.S. Department of Energy. A.S. acknowledges support from
  the DOE/BES Science of 100T grant. B.J.R. acknowledges funding from the National
  Science Foundation under Grant No.\r\nDMR-1752784."
article_number: '035111'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: A.
  full_name: Shekhter, A.
  last_name: Shekhter
- first_name: R. D.
  full_name: Mcdonald, R. D.
  last_name: Mcdonald
- first_name: B. J.
  full_name: Ramshaw, B. J.
  last_name: Ramshaw
- first_name: Kimberly A
  full_name: Modic, Kimberly A
  id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
  last_name: Modic
  orcid: 0000-0001-9760-3147
citation:
  ama: Shekhter A, Mcdonald RD, Ramshaw BJ, Modic KA. Magnetotropic susceptibility.
    <i>Physical Review B</i>. 2023;108(3). doi:<a href="https://doi.org/10.1103/PhysRevB.108.035111">10.1103/PhysRevB.108.035111</a>
  apa: Shekhter, A., Mcdonald, R. D., Ramshaw, B. J., &#38; Modic, K. A. (2023). Magnetotropic
    susceptibility. <i>Physical Review B</i>. American Physical Society. <a href="https://doi.org/10.1103/PhysRevB.108.035111">https://doi.org/10.1103/PhysRevB.108.035111</a>
  chicago: Shekhter, A., R. D. Mcdonald, B. J. Ramshaw, and Kimberly A Modic. “Magnetotropic
    Susceptibility.” <i>Physical Review B</i>. American Physical Society, 2023. <a
    href="https://doi.org/10.1103/PhysRevB.108.035111">https://doi.org/10.1103/PhysRevB.108.035111</a>.
  ieee: A. Shekhter, R. D. Mcdonald, B. J. Ramshaw, and K. A. Modic, “Magnetotropic
    susceptibility,” <i>Physical Review B</i>, vol. 108, no. 3. American Physical
    Society, 2023.
  ista: Shekhter A, Mcdonald RD, Ramshaw BJ, Modic KA. 2023. Magnetotropic susceptibility.
    Physical Review B. 108(3), 035111.
  mla: Shekhter, A., et al. “Magnetotropic Susceptibility.” <i>Physical Review B</i>,
    vol. 108, no. 3, 035111, American Physical Society, 2023, doi:<a href="https://doi.org/10.1103/PhysRevB.108.035111">10.1103/PhysRevB.108.035111</a>.
  short: A. Shekhter, R.D. Mcdonald, B.J. Ramshaw, K.A. Modic, Physical Review B 108
    (2023).
date_created: 2023-07-23T22:01:10Z
date_published: 2023-07-15T00:00:00Z
date_updated: 2023-12-13T11:58:57Z
day: '15'
department:
- _id: KiMo
doi: 10.1103/PhysRevB.108.035111
external_id:
  arxiv:
  - '2208.10038'
  isi:
  - '001062708600002'
intvolume: '       108'
isi: 1
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2208.10038
month: '07'
oa: 1
oa_version: Preprint
publication: Physical Review B
publication_identifier:
  eissn:
  - 2469-9969
  issn:
  - 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Magnetotropic susceptibility
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 108
year: '2023'
...
---
_id: '8673'
abstract:
- lang: eng
  text: In RuCl3, inelastic neutron scattering and Raman spectroscopy reveal a continuum
    of non-spin-wave excitations that persists to high temperature, suggesting the
    presence of a spin liquid state on a honeycomb lattice. In the context of the
    Kitaev model, finite magnetic fields introduce interactions between the elementary
    excitations, and thus the effects of high magnetic fields that are comparable
    to the spin-exchange energy scale must be explored. Here, we report measurements
    of the magnetotropic coefficient—the thermodynamic coefficient associated with
    magnetic anisotropy—over a wide range of magnetic fields and temperatures. We
    find that magnetic field and temperature compete to determine the magnetic response
    in a way that is independent of the large intrinsic exchange-interaction energy.
    This emergent scale-invariant magnetic anisotropy provides evidence for a high
    degree of exchange frustration that favours the formation of a spin liquid state
    in RuCl3.
acknowledgement: We thank M. Baenitz, A. Bangura, R. Coldea, G. Jackeli, S. Kivelson,
  S. Nagler, R. Valenti, C. Varma, S. Winter and J. Zaanen for insightful discussions.
  Samples were grown at the Max Planck Institute for Chemical Physics of Solids. The
  d.c.-field measurements were made at the National High Magnetic Field Laboratory
  (NHMFL) in Tallahassee, FL. The pulsed-field measurements were made in the Pulsed
  Field Facility of the NHMFL in Los Alamos, NM. All work at the NHMFL is supported
  through the National Science Foundation Cooperative Agreement nos. DMR-1157490 and
  DMR-1644779, the US Department of Energy and the State of Florida. R.D.M. acknowledges
  support from LANL LDRD-DR 20160085 Topology and Strong Correlations. M.C. acknowledges
  support from the Department of Energy ‘Science of 100 tesla’ BES programme for high-field
  experiments. X-ray data acquisition and analysis was performed at Cornell University.
  Research conducted at the Cornell High Energy Synchrotron Source (CHESS) is supported
  by the National Science Foundation under award no. DMR-1332208. B.J.R. acknowledges
  support from the Institute for Quantum Matter, an Energy Frontier Research Center
  funded by the US Department of Energy, Office of Science, Office of Basic Energy
  Sciences under award no. DE-SC0019331. Y.L. acknowledges support from the US Department
  of Energy through the LANL/LDRD programme and the G.T. Seaborg institute. J.C.P.
  is supported by a Gabilan Stanford Graduate Fellowship and an NSF Graduate Research
  Fellowship (grant no. DGE-114747). P.J.W.M. acknowledges funding from the Swiss
  National Science Foundation through project no. PP00P2-176789.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Kimberly A
  full_name: Modic, Kimberly A
  id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
  last_name: Modic
  orcid: 0000-0001-9760-3147
- first_name: Ross D.
  full_name: McDonald, Ross D.
  last_name: McDonald
- first_name: J.P.C.
  full_name: Ruff, J.P.C.
  last_name: Ruff
- first_name: Maja D.
  full_name: Bachmann, Maja D.
  last_name: Bachmann
- first_name: You
  full_name: Lai, You
  last_name: Lai
- first_name: Johanna C.
  full_name: Palmstrom, Johanna C.
  last_name: Palmstrom
- first_name: David
  full_name: Graf, David
  last_name: Graf
- first_name: Mun K.
  full_name: Chan, Mun K.
  last_name: Chan
- first_name: F.F.
  full_name: Balakirev, F.F.
  last_name: Balakirev
- first_name: J.B.
  full_name: Betts, J.B.
  last_name: Betts
- first_name: G.S.
  full_name: Boebinger, G.S.
  last_name: Boebinger
- first_name: Marcus
  full_name: Schmidt, Marcus
  last_name: Schmidt
- first_name: Michael J.
  full_name: Lawler, Michael J.
  last_name: Lawler
- first_name: D.A.
  full_name: Sokolov, D.A.
  last_name: Sokolov
- first_name: Philip J.W.
  full_name: Moll, Philip J.W.
  last_name: Moll
- first_name: B.J.
  full_name: Ramshaw, B.J.
  last_name: Ramshaw
- first_name: Arkady
  full_name: Shekhter, Arkady
  last_name: Shekhter
citation:
  ama: Modic KA, McDonald RD, Ruff JPC, et al. Scale-invariant magnetic anisotropy
    in RuCl3 at high magnetic fields. <i>Nature Physics</i>. 2021;17:240-244. doi:<a
    href="https://doi.org/10.1038/s41567-020-1028-0">10.1038/s41567-020-1028-0</a>
  apa: Modic, K. A., McDonald, R. D., Ruff, J. P. C., Bachmann, M. D., Lai, Y., Palmstrom,
    J. C., … Shekhter, A. (2021). Scale-invariant magnetic anisotropy in RuCl3 at
    high magnetic fields. <i>Nature Physics</i>. Springer Nature. <a href="https://doi.org/10.1038/s41567-020-1028-0">https://doi.org/10.1038/s41567-020-1028-0</a>
  chicago: Modic, Kimberly A, Ross D. McDonald, J.P.C. Ruff, Maja D. Bachmann, You
    Lai, Johanna C. Palmstrom, David Graf, et al. “Scale-Invariant Magnetic Anisotropy
    in RuCl3 at High Magnetic Fields.” <i>Nature Physics</i>. Springer Nature, 2021.
    <a href="https://doi.org/10.1038/s41567-020-1028-0">https://doi.org/10.1038/s41567-020-1028-0</a>.
  ieee: K. A. Modic <i>et al.</i>, “Scale-invariant magnetic anisotropy in RuCl3 at
    high magnetic fields,” <i>Nature Physics</i>, vol. 17. Springer Nature, pp. 240–244,
    2021.
  ista: Modic KA, McDonald RD, Ruff JPC, Bachmann MD, Lai Y, Palmstrom JC, Graf D,
    Chan MK, Balakirev FF, Betts JB, Boebinger GS, Schmidt M, Lawler MJ, Sokolov DA,
    Moll PJW, Ramshaw BJ, Shekhter A. 2021. Scale-invariant magnetic anisotropy in
    RuCl3 at high magnetic fields. Nature Physics. 17, 240–244.
  mla: Modic, Kimberly A., et al. “Scale-Invariant Magnetic Anisotropy in RuCl3 at
    High Magnetic Fields.” <i>Nature Physics</i>, vol. 17, Springer Nature, 2021,
    pp. 240–44, doi:<a href="https://doi.org/10.1038/s41567-020-1028-0">10.1038/s41567-020-1028-0</a>.
  short: K.A. Modic, R.D. McDonald, J.P.C. Ruff, M.D. Bachmann, Y. Lai, J.C. Palmstrom,
    D. Graf, M.K. Chan, F.F. Balakirev, J.B. Betts, G.S. Boebinger, M. Schmidt, M.J.
    Lawler, D.A. Sokolov, P.J.W. Moll, B.J. Ramshaw, A. Shekhter, Nature Physics 17
    (2021) 240–244.
corr_author: '1'
date_created: 2020-10-18T22:01:37Z
date_published: 2021-02-01T00:00:00Z
date_updated: 2025-07-10T11:57:16Z
day: '01'
department:
- _id: KiMo
doi: 10.1038/s41567-020-1028-0
external_id:
  arxiv:
  - '2005.04228'
  isi:
  - '000575344700003'
intvolume: '        17'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2005.04228
month: '02'
oa: 1
oa_version: Preprint
page: 240-244
publication: Nature Physics
publication_identifier:
  eissn:
  - 1745-2481
  issn:
  - 1745-2473
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Scale-invariant magnetic anisotropy in RuCl3 at high magnetic fields
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 17
year: '2021'
...
---
_id: '7942'
abstract:
- lang: eng
  text: An understanding of the missing antinodal electronic excitations in the pseudogap
    state is essential for uncovering the physics of the underdoped cuprate high-temperature
    superconductors1,2,3,4,5,6. The majority of high-temperature experiments performed
    thus far, however, have been unable to discern whether the antinodal states are
    rendered unobservable due to their damping or whether they vanish due to their
    gapping7,8,9,10,11,12,13,14,15,16,17,18. Here, we distinguish between these two
    scenarios by using quantum oscillations to examine whether the small Fermi surface
    pocket, found to occupy only 2% of the Brillouin zone in the underdoped cuprates19,20,21,22,23,24,
    exists in isolation against a majority of completely gapped density of states
    spanning the antinodes, or whether it is thermodynamically coupled to a background
    of ungapped antinodal states. We find that quantum oscillations associated with
    the small Fermi surface pocket exhibit a signature sawtooth waveform characteristic
    of an isolated two-dimensional Fermi surface pocket25,26,27,28,29,30,31,32. This
    finding reveals that the antinodal states are destroyed by a hard gap that extends
    over the majority of the Brillouin zone, placing strong constraints on a drastic
    underlying origin of quasiparticle disappearance over almost the entire Brillouin
    zone in the pseudogap regime7,8,9,10,11,12,13,14,15,16,17,18.
acknowledgement: M.H., Y.-T.H. and S.E.S. acknowledge support from the Royal Society,
  the Winton Programme for the Physics of Sustainability, EPSRC (studentship, grant
  no. EP/P024947/1 and EPSRC Strategic Equipment grant no. EP/M000524/1) and the European
  Research Council (grant no. 772891). S.E.S. acknowledges support from the Leverhulme
  Trust by way of the award of a Philip Leverhulme Prize. H.Z., J.W. and Z.Z. acknowledge
  support from the National Key Research and Development Program of China (grant no.
  2016YFA0401704). A portion of this work was performed at the National High Magnetic
  Field Laboratory, which is supported by the National Science Foundation Cooperative
  Agreement no. DMR-1644779, the state of Florida and the US Department of Energy.
  Work performed by M.K.C., R.D.M. and N.H. was supported by the US DOE BES ‘Science
  of 100 T’ programme.
article_processing_charge: No
article_type: letter_note
arxiv: 1
author:
- first_name: Máté
  full_name: Hartstein, Máté
  last_name: Hartstein
- first_name: Yu Te
  full_name: Hsu, Yu Te
  last_name: Hsu
- first_name: Kimberly A
  full_name: Modic, Kimberly A
  id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
  last_name: Modic
  orcid: 0000-0001-9760-3147
- first_name: Juan
  full_name: Porras, Juan
  last_name: Porras
- first_name: Toshinao
  full_name: Loew, Toshinao
  last_name: Loew
- first_name: Matthieu Le
  full_name: Tacon, Matthieu Le
  last_name: Tacon
- first_name: Huakun
  full_name: Zuo, Huakun
  last_name: Zuo
- first_name: Jinhua
  full_name: Wang, Jinhua
  last_name: Wang
- first_name: Zengwei
  full_name: Zhu, Zengwei
  last_name: Zhu
- first_name: Mun K.
  full_name: Chan, Mun K.
  last_name: Chan
- first_name: Ross D.
  full_name: Mcdonald, Ross D.
  last_name: Mcdonald
- first_name: Gilbert G.
  full_name: Lonzarich, Gilbert G.
  last_name: Lonzarich
- first_name: Bernhard
  full_name: Keimer, Bernhard
  last_name: Keimer
- first_name: Suchitra E.
  full_name: Sebastian, Suchitra E.
  last_name: Sebastian
- first_name: Neil
  full_name: Harrison, Neil
  last_name: Harrison
citation:
  ama: Hartstein M, Hsu YT, Modic KA, et al. Hard antinodal gap revealed by quantum
    oscillations in the pseudogap regime of underdoped high-Tc superconductors. <i>Nature
    Physics</i>. 2020;16:841-847. doi:<a href="https://doi.org/10.1038/s41567-020-0910-0">10.1038/s41567-020-0910-0</a>
  apa: Hartstein, M., Hsu, Y. T., Modic, K. A., Porras, J., Loew, T., Tacon, M. L.,
    … Harrison, N. (2020). Hard antinodal gap revealed by quantum oscillations in
    the pseudogap regime of underdoped high-Tc superconductors. <i>Nature Physics</i>.
    Springer Nature. <a href="https://doi.org/10.1038/s41567-020-0910-0">https://doi.org/10.1038/s41567-020-0910-0</a>
  chicago: Hartstein, Máté, Yu Te Hsu, Kimberly A Modic, Juan Porras, Toshinao Loew,
    Matthieu Le Tacon, Huakun Zuo, et al. “Hard Antinodal Gap Revealed by Quantum
    Oscillations in the Pseudogap Regime of Underdoped High-Tc Superconductors.” <i>Nature
    Physics</i>. Springer Nature, 2020. <a href="https://doi.org/10.1038/s41567-020-0910-0">https://doi.org/10.1038/s41567-020-0910-0</a>.
  ieee: M. Hartstein <i>et al.</i>, “Hard antinodal gap revealed by quantum oscillations
    in the pseudogap regime of underdoped high-Tc superconductors,” <i>Nature Physics</i>,
    vol. 16. Springer Nature, pp. 841–847, 2020.
  ista: Hartstein M, Hsu YT, Modic KA, Porras J, Loew T, Tacon ML, Zuo H, Wang J,
    Zhu Z, Chan MK, Mcdonald RD, Lonzarich GG, Keimer B, Sebastian SE, Harrison N.
    2020. Hard antinodal gap revealed by quantum oscillations in the pseudogap regime
    of underdoped high-Tc superconductors. Nature Physics. 16, 841–847.
  mla: Hartstein, Máté, et al. “Hard Antinodal Gap Revealed by Quantum Oscillations
    in the Pseudogap Regime of Underdoped High-Tc Superconductors.” <i>Nature Physics</i>,
    vol. 16, Springer Nature, 2020, pp. 841–47, doi:<a href="https://doi.org/10.1038/s41567-020-0910-0">10.1038/s41567-020-0910-0</a>.
  short: M. Hartstein, Y.T. Hsu, K.A. Modic, J. Porras, T. Loew, M.L. Tacon, H. Zuo,
    J. Wang, Z. Zhu, M.K. Chan, R.D. Mcdonald, G.G. Lonzarich, B. Keimer, S.E. Sebastian,
    N. Harrison, Nature Physics 16 (2020) 841–847.
date_created: 2020-06-07T22:00:56Z
date_published: 2020-08-01T00:00:00Z
date_updated: 2025-07-10T11:54:52Z
day: '01'
department:
- _id: KiMo
doi: 10.1038/s41567-020-0910-0
external_id:
  arxiv:
  - '2005.14123'
  isi:
  - '000535464400005'
intvolume: '        16'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2005.14123
month: '08'
oa: 1
oa_version: Preprint
page: 841-847
publication: Nature Physics
publication_identifier:
  eissn:
  - 1745-2481
  issn:
  - 1745-2473
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
  record:
  - id: '9708'
    relation: research_data
    status: public
scopus_import: '1'
status: public
title: Hard antinodal gap revealed by quantum oscillations in the pseudogap regime
  of underdoped high-Tc superconductors
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 16
year: '2020'
...
---
_id: '9708'
abstract:
- lang: eng
  text: This research data supports 'Hard antinodal gap revealed by quantum oscillations
    in the pseudogap regime of underdoped high-Tc superconductors'. A Readme file
    for plotting each figure is provided.
article_processing_charge: No
author:
- first_name: Mate
  full_name: Hartstein, Mate
  last_name: Hartstein
- first_name: Yu-Te
  full_name: Hsu, Yu-Te
  last_name: Hsu
- first_name: Kimberly A
  full_name: Modic, Kimberly A
  id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
  last_name: Modic
  orcid: 0000-0001-9760-3147
- first_name: Juan
  full_name: Porras, Juan
  last_name: Porras
- first_name: Toshinao
  full_name: Loew, Toshinao
  last_name: Loew
- first_name: Matthieu
  full_name: Le Tacon, Matthieu
  last_name: Le Tacon
- first_name: Huakun
  full_name: Zuo, Huakun
  last_name: Zuo
- first_name: Jinhua
  full_name: Wang, Jinhua
  last_name: Wang
- first_name: Zengwei
  full_name: Zhu, Zengwei
  last_name: Zhu
- first_name: Mun
  full_name: Chan, Mun
  last_name: Chan
- first_name: Ross
  full_name: McDonald, Ross
  last_name: McDonald
- first_name: Gilbert
  full_name: Lonzarich, Gilbert
  last_name: Lonzarich
- first_name: Bernhard
  full_name: Keimer, Bernhard
  last_name: Keimer
- first_name: Suchitra
  full_name: Sebastian, Suchitra
  last_name: Sebastian
- first_name: Neil
  full_name: Harrison, Neil
  last_name: Harrison
citation:
  ama: Hartstein M, Hsu Y-T, Modic KA, et al. Accompanying dataset for “Hard antinodal
    gap revealed by quantum oscillations in the pseudogap regime of underdoped high-Tc
    superconductors.” 2020. doi:<a href="https://doi.org/10.17863/cam.50169">10.17863/cam.50169</a>
  apa: Hartstein, M., Hsu, Y.-T., Modic, K. A., Porras, J., Loew, T., Le Tacon, M.,
    … Harrison, N. (2020). Accompanying dataset for “Hard antinodal gap revealed by
    quantum oscillations in the pseudogap regime of underdoped high-Tc superconductors.”
    Apollo - University of Cambridge. <a href="https://doi.org/10.17863/cam.50169">https://doi.org/10.17863/cam.50169</a>
  chicago: Hartstein, Mate, Yu-Te Hsu, Kimberly A Modic, Juan Porras, Toshinao Loew,
    Matthieu Le Tacon, Huakun Zuo, et al. “Accompanying Dataset for ‘Hard Antinodal
    Gap Revealed by Quantum Oscillations in the Pseudogap Regime of Underdoped High-Tc
    Superconductors.’” Apollo - University of Cambridge, 2020. <a href="https://doi.org/10.17863/cam.50169">https://doi.org/10.17863/cam.50169</a>.
  ieee: M. Hartstein <i>et al.</i>, “Accompanying dataset for ‘Hard antinodal gap
    revealed by quantum oscillations in the pseudogap regime of underdoped high-Tc
    superconductors.’” Apollo - University of Cambridge, 2020.
  ista: Hartstein M, Hsu Y-T, Modic KA, Porras J, Loew T, Le Tacon M, Zuo H, Wang
    J, Zhu Z, Chan M, McDonald R, Lonzarich G, Keimer B, Sebastian S, Harrison N.
    2020. Accompanying dataset for ‘Hard antinodal gap revealed by quantum oscillations
    in the pseudogap regime of underdoped high-Tc superconductors’, Apollo - University
    of Cambridge, <a href="https://doi.org/10.17863/cam.50169">10.17863/cam.50169</a>.
  mla: Hartstein, Mate, et al. <i>Accompanying Dataset for “Hard Antinodal Gap Revealed
    by Quantum Oscillations in the Pseudogap Regime of Underdoped High-Tc Superconductors.”</i>
    Apollo - University of Cambridge, 2020, doi:<a href="https://doi.org/10.17863/cam.50169">10.17863/cam.50169</a>.
  short: M. Hartstein, Y.-T. Hsu, K.A. Modic, J. Porras, T. Loew, M. Le Tacon, H.
    Zuo, J. Wang, Z. Zhu, M. Chan, R. McDonald, G. Lonzarich, B. Keimer, S. Sebastian,
    N. Harrison, (2020).
date_created: 2021-07-23T10:00:35Z
date_published: 2020-05-29T00:00:00Z
date_updated: 2025-07-10T11:54:51Z
day: '29'
department:
- _id: KiMo
doi: 10.17863/cam.50169
has_accepted_license: '1'
main_file_link:
- open_access: '1'
  url: https://doi.org/10.17863/CAM.50169
month: '05'
oa: 1
oa_version: Published Version
publisher: Apollo - University of Cambridge
related_material:
  record:
  - id: '7942'
    relation: used_in_publication
    status: public
status: public
title: Accompanying dataset for 'Hard antinodal gap revealed by quantum oscillations
  in the pseudogap regime of underdoped high-Tc superconductors'
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: research_data_reference
user_id: 6785fbc1-c503-11eb-8a32-93094b40e1cf
year: '2020'
...
---
_id: '7084'
abstract:
- lang: eng
  text: The unusual correlated state that emerges in URu2Si2 below THO = 17.5 K is
    known as “hidden order” because even basic characteristics of the order parameter,
    such as its dimensionality (whether it has one component or two), are “hidden.”
    We use resonant ultrasound spectroscopy to measure the symmetry-resolved elastic
    anomalies across THO. We observe no anomalies in the shear elastic moduli, providing
    strong thermodynamic evidence for a one-component order parameter. We develop
    a machine learning framework that reaches this conclusion directly from the raw
    data, even in a crystal that is too small for traditional resonant ultrasound.
    Our result rules out a broad class of theories of hidden order based on two-component
    order parameters, and constrains the nature of the fluctuations from which unconventional
    superconductivity emerges at lower temperature. Our machine learning framework
    is a powerful new tool for classifying the ubiquitous competing orders in correlated
    electron systems.
article_number: eaaz4074
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Sayak
  full_name: Ghosh, Sayak
  last_name: Ghosh
- first_name: Michael
  full_name: Matty, Michael
  last_name: Matty
- first_name: Ryan
  full_name: Baumbach, Ryan
  last_name: Baumbach
- first_name: Eric D.
  full_name: Bauer, Eric D.
  last_name: Bauer
- first_name: Kimberly A
  full_name: Modic, Kimberly A
  id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
  last_name: Modic
  orcid: 0000-0001-9760-3147
- first_name: Arkady
  full_name: Shekhter, Arkady
  last_name: Shekhter
- first_name: J. A.
  full_name: Mydosh, J. A.
  last_name: Mydosh
- first_name: Eun-Ah
  full_name: Kim, Eun-Ah
  last_name: Kim
- first_name: B. J.
  full_name: Ramshaw, B. J.
  last_name: Ramshaw
citation:
  ama: Ghosh S, Matty M, Baumbach R, et al. One-component order parameter in URu2Si2
    uncovered by resonant  ultrasound spectroscopy and machine learning. <i>Science
    Advances</i>. 2020;6(10). doi:<a href="https://doi.org/10.1126/sciadv.aaz4074">10.1126/sciadv.aaz4074</a>
  apa: Ghosh, S., Matty, M., Baumbach, R., Bauer, E. D., Modic, K. A., Shekhter, A.,
    … Ramshaw, B. J. (2020). One-component order parameter in URu2Si2 uncovered by
    resonant  ultrasound spectroscopy and machine learning. <i>Science Advances</i>.
    American Association for the Advancement of Science. <a href="https://doi.org/10.1126/sciadv.aaz4074">https://doi.org/10.1126/sciadv.aaz4074</a>
  chicago: Ghosh, Sayak, Michael Matty, Ryan Baumbach, Eric D. Bauer, Kimberly A Modic,
    Arkady Shekhter, J. A. Mydosh, Eun-Ah Kim, and B. J. Ramshaw. “One-Component Order
    Parameter in URu2Si2 Uncovered by Resonant  Ultrasound Spectroscopy and Machine
    Learning.” <i>Science Advances</i>. American Association for the Advancement of
    Science, 2020. <a href="https://doi.org/10.1126/sciadv.aaz4074">https://doi.org/10.1126/sciadv.aaz4074</a>.
  ieee: S. Ghosh <i>et al.</i>, “One-component order parameter in URu2Si2 uncovered
    by resonant  ultrasound spectroscopy and machine learning,” <i>Science Advances</i>,
    vol. 6, no. 10. American Association for the Advancement of Science, 2020.
  ista: Ghosh S, Matty M, Baumbach R, Bauer ED, Modic KA, Shekhter A, Mydosh JA, Kim
    E-A, Ramshaw BJ. 2020. One-component order parameter in URu2Si2 uncovered by resonant 
    ultrasound spectroscopy and machine learning. Science Advances. 6(10), eaaz4074.
  mla: Ghosh, Sayak, et al. “One-Component Order Parameter in URu2Si2 Uncovered by
    Resonant  Ultrasound Spectroscopy and Machine Learning.” <i>Science Advances</i>,
    vol. 6, no. 10, eaaz4074, American Association for the Advancement of Science,
    2020, doi:<a href="https://doi.org/10.1126/sciadv.aaz4074">10.1126/sciadv.aaz4074</a>.
  short: S. Ghosh, M. Matty, R. Baumbach, E.D. Bauer, K.A. Modic, A. Shekhter, J.A.
    Mydosh, E.-A. Kim, B.J. Ramshaw, Science Advances 6 (2020).
date_created: 2019-11-19T14:01:10Z
date_published: 2020-03-06T00:00:00Z
date_updated: 2022-08-25T15:08:41Z
day: '06'
doi: 10.1126/sciadv.aaz4074
extern: '1'
external_id:
  arxiv:
  - '1903.00552'
  pmid:
  - '32181367'
intvolume: '         6'
issue: '10'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1903.00552
month: '03'
oa: 1
oa_version: Preprint
pmid: 1
publication: Science Advances
publication_status: published
publisher: American Association for the Advancement of Science
quality_controlled: '1'
status: public
title: One-component order parameter in URu2Si2 uncovered by resonant  ultrasound
  spectroscopy and machine learning
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 6
year: '2020'
...
---
_id: '7055'
abstract:
- lang: eng
  text: A recent class of topological nodal-line semimetals with the general formula
    MSiX (M = Zr, Hf and X = S, Se, Te) has attracted much experimental and theoretical
    interest due to their properties, particularly their large magnetoresistances
    and high carrier mobilities. The plateletlike nature of the MSiX crystals and
    their extremely low residual resistivities make measurements of the resistivity
    along the [001] direction extremely challenging. To accomplish such measurements,
    microstructures of single crystals were prepared using focused ion beam techniques.
    Microstructures prepared in this manner have very well-defined geometries and
    maintain their high crystal quality, verified by the observations of quantum oscillations.
    We present magnetoresistance and quantum oscillation data for currents applied
    along both [001] and [100] in ZrSiS and ZrSiSe, which are consistent with the
    nontrivial topology of the Dirac line-node, as determined by a measured π Berry
    phase. Surprisingly, we find that, despite the three dimensional nature of both
    the Fermi surfaces of ZrSiS and ZrSiSe, both the resistivity anisotropy under
    applied magnetic fields and the in-plane angular dependent magnetoresistance differ
    considerably between the two compounds. Finally, we discuss the role microstructuring
    can play in the study of these materials and our ability to make these microstructures
    free-standing.
article_number: '101116'
article_processing_charge: No
article_type: original
author:
- first_name: Kent R.
  full_name: Shirer, Kent R.
  last_name: Shirer
- first_name: Kimberly A
  full_name: Modic, Kimberly A
  id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
  last_name: Modic
  orcid: 0000-0001-9760-3147
- first_name: Tino
  full_name: Zimmerling, Tino
  last_name: Zimmerling
- first_name: Maja D.
  full_name: Bachmann, Maja D.
  last_name: Bachmann
- first_name: Markus
  full_name: König, Markus
  last_name: König
- first_name: Philip J. W.
  full_name: Moll, Philip J. W.
  last_name: Moll
- first_name: Leslie
  full_name: Schoop, Leslie
  last_name: Schoop
- first_name: Andrew P.
  full_name: Mackenzie, Andrew P.
  last_name: Mackenzie
citation:
  ama: Shirer KR, Modic KA, Zimmerling T, et al. Out-of-plane transport in ZrSiS and
    ZrSiSe microstructures. <i>APL Materials</i>. 2019;7(10). doi:<a href="https://doi.org/10.1063/1.5124568">10.1063/1.5124568</a>
  apa: Shirer, K. R., Modic, K. A., Zimmerling, T., Bachmann, M. D., König, M., Moll,
    P. J. W., … Mackenzie, A. P. (2019). Out-of-plane transport in ZrSiS and ZrSiSe
    microstructures. <i>APL Materials</i>. AIP. <a href="https://doi.org/10.1063/1.5124568">https://doi.org/10.1063/1.5124568</a>
  chicago: Shirer, Kent R., Kimberly A Modic, Tino Zimmerling, Maja D. Bachmann, Markus
    König, Philip J. W. Moll, Leslie Schoop, and Andrew P. Mackenzie. “Out-of-Plane
    Transport in ZrSiS and ZrSiSe Microstructures.” <i>APL Materials</i>. AIP, 2019.
    <a href="https://doi.org/10.1063/1.5124568">https://doi.org/10.1063/1.5124568</a>.
  ieee: K. R. Shirer <i>et al.</i>, “Out-of-plane transport in ZrSiS and ZrSiSe microstructures,”
    <i>APL Materials</i>, vol. 7, no. 10. AIP, 2019.
  ista: Shirer KR, Modic KA, Zimmerling T, Bachmann MD, König M, Moll PJW, Schoop
    L, Mackenzie AP. 2019. Out-of-plane transport in ZrSiS and ZrSiSe microstructures.
    APL Materials. 7(10), 101116.
  mla: Shirer, Kent R., et al. “Out-of-Plane Transport in ZrSiS and ZrSiSe Microstructures.”
    <i>APL Materials</i>, vol. 7, no. 10, 101116, AIP, 2019, doi:<a href="https://doi.org/10.1063/1.5124568">10.1063/1.5124568</a>.
  short: K.R. Shirer, K.A. Modic, T. Zimmerling, M.D. Bachmann, M. König, P.J.W. Moll,
    L. Schoop, A.P. Mackenzie, APL Materials 7 (2019).
date_created: 2019-11-19T12:52:43Z
date_published: 2019-10-17T00:00:00Z
date_updated: 2021-01-12T08:11:35Z
day: '17'
ddc:
- '530'
doi: 10.1063/1.5124568
extern: '1'
file:
- access_level: open_access
  checksum: 142fe7b3e37d8e916071743bb194360d
  content_type: application/pdf
  creator: dernst
  date_created: 2019-11-20T12:27:01Z
  date_updated: 2020-07-14T12:47:48Z
  file_id: '7087'
  file_name: 2019_APL_Shirer.pdf
  file_size: 2453220
  relation: main_file
file_date_updated: 2020-07-14T12:47:48Z
has_accepted_license: '1'
intvolume: '         7'
issue: '10'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
publication: APL Materials
publication_identifier:
  issn:
  - 2166-532X
publication_status: published
publisher: AIP
quality_controlled: '1'
status: public
title: Out-of-plane transport in ZrSiS and ZrSiSe microstructures
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 7
year: '2019'
...
---
_id: '7056'
abstract:
- lang: eng
  text: "In the Ca1−x La x FeAs2 (1 1 2) family of pnictide superconductors, we have
    investigated a highly overdoped composition (x  =  0.56), prepared by a high-pressure,
    high-temperature synthesis. Magnetic measurements show an antiferromagnetic transition
    at T N  =  120 K, well above the one at lower doping (0.15  <  x  <  0.27).\r\n\r\nBelow
    the onset of long-range magnetic order at T N, the electrical resistivity is strongly
    reduced and is dominated by electron–electron interactions, as evident from its
    temperature dependence. The Seebeck coefficient shows a clear metallic behavior
    as in narrow band conductors. The temperature dependence of the Hall coefficient
    and the violation of Kohler's rule agree with the multiband character of the material.
    No superconductivity was observed down to 1.8 K. The success of the high-pressure
    synthesis encourages further investigations of the so far only partially explored
    phase diagram in this family of Iron-based high temperature superconductors.\r\n"
article_number: '485705'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Edoardo
  full_name: Martino, Edoardo
  last_name: Martino
- first_name: Maja D
  full_name: Bachmann, Maja D
  last_name: Bachmann
- first_name: Lidia
  full_name: Rossi, Lidia
  last_name: Rossi
- first_name: Kimberly A
  full_name: Modic, Kimberly A
  id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
  last_name: Modic
  orcid: 0000-0001-9760-3147
- first_name: Ivica
  full_name: Zivkovic, Ivica
  last_name: Zivkovic
- first_name: Henrik M
  full_name: Rønnow, Henrik M
  last_name: Rønnow
- first_name: Philip J W
  full_name: Moll, Philip J W
  last_name: Moll
- first_name: Ana
  full_name: Akrap, Ana
  last_name: Akrap
- first_name: László
  full_name: Forró, László
  last_name: Forró
- first_name: Sergiy
  full_name: Katrych, Sergiy
  last_name: Katrych
citation:
  ama: 'Martino E, Bachmann MD, Rossi L, et al. Persistent antiferromagnetic order
    in heavily overdoped Ca1−x La x FeAs2. <i>Journal of Physics: Condensed Matter</i>.
    2019;31(48). doi:<a href="https://doi.org/10.1088/1361-648x/ab3b43">10.1088/1361-648x/ab3b43</a>'
  apa: 'Martino, E., Bachmann, M. D., Rossi, L., Modic, K. A., Zivkovic, I., Rønnow,
    H. M., … Katrych, S. (2019). Persistent antiferromagnetic order in heavily overdoped
    Ca1−x La x FeAs2. <i>Journal of Physics: Condensed Matter</i>. IOP Publishing.
    <a href="https://doi.org/10.1088/1361-648x/ab3b43">https://doi.org/10.1088/1361-648x/ab3b43</a>'
  chicago: 'Martino, Edoardo, Maja D Bachmann, Lidia Rossi, Kimberly A Modic, Ivica
    Zivkovic, Henrik M Rønnow, Philip J W Moll, Ana Akrap, László Forró, and Sergiy
    Katrych. “Persistent Antiferromagnetic Order in Heavily Overdoped Ca1−x La x FeAs2.”
    <i>Journal of Physics: Condensed Matter</i>. IOP Publishing, 2019. <a href="https://doi.org/10.1088/1361-648x/ab3b43">https://doi.org/10.1088/1361-648x/ab3b43</a>.'
  ieee: 'E. Martino <i>et al.</i>, “Persistent antiferromagnetic order in heavily
    overdoped Ca1−x La x FeAs2,” <i>Journal of Physics: Condensed Matter</i>, vol.
    31, no. 48. IOP Publishing, 2019.'
  ista: 'Martino E, Bachmann MD, Rossi L, Modic KA, Zivkovic I, Rønnow HM, Moll PJW,
    Akrap A, Forró L, Katrych S. 2019. Persistent antiferromagnetic order in heavily
    overdoped Ca1−x La x FeAs2. Journal of Physics: Condensed Matter. 31(48), 485705.'
  mla: 'Martino, Edoardo, et al. “Persistent Antiferromagnetic Order in Heavily Overdoped
    Ca1−x La x FeAs2.” <i>Journal of Physics: Condensed Matter</i>, vol. 31, no. 48,
    485705, IOP Publishing, 2019, doi:<a href="https://doi.org/10.1088/1361-648x/ab3b43">10.1088/1361-648x/ab3b43</a>.'
  short: 'E. Martino, M.D. Bachmann, L. Rossi, K.A. Modic, I. Zivkovic, H.M. Rønnow,
    P.J.W. Moll, A. Akrap, L. Forró, S. Katrych, Journal of Physics: Condensed Matter
    31 (2019).'
date_created: 2019-11-19T12:56:17Z
date_published: 2019-09-03T00:00:00Z
date_updated: 2021-01-12T08:11:35Z
day: '03'
doi: 10.1088/1361-648x/ab3b43
extern: '1'
external_id:
  arxiv:
  - '1905.08640'
intvolume: '        31'
issue: '48'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1905.08640
month: '09'
oa: 1
oa_version: Preprint
publication: 'Journal of Physics: Condensed Matter'
publication_identifier:
  eissn:
  - 1361-648X
  issn:
  - 0953-8984
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
status: public
title: Persistent antiferromagnetic order in heavily overdoped Ca1−x La x FeAs2
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 31
year: '2019'
...
---
_id: '7057'
abstract:
- lang: eng
  text: We present a high magnetic field study of NbP—a member of the monopnictide
    Weyl semimetal (WSM) family. While the monoarsenides (NbAs and TaAs) have topologically
    distinct left and right-handed Weyl fermi surfaces, NbP is argued to be “topologically
    trivial” due to the fact that all pairs of Weyl nodes are encompassed by a single
    Fermi surface. We use torque magnetometry to measure the magnetic response of
    NbP up to 60 tesla and uncover a Berry paramagnetic response, characteristic of
    the topological Weyl nodes, across the entire field range. At the quantum limit
    B* (≈32 T), τ/B experiences a change in slope when the chemical potential enters
    the last Landau level. Our calculations confirm that this magnetic response arises
    from band topology of the Weyl pocket, even though the Fermi surface encompasses
    both Weyl nodes at zero magnetic field. We also find that the magnetic field pulls
    the chemical potential to the chiral n = 0 Landau level in the quantum limit,
    providing a disorder-free way of accessing chiral Weyl fermions in systems that
    are “not quite” WSMs in zero magnetic field.
article_number: '2095'
article_processing_charge: No
article_type: original
author:
- first_name: Kimberly A
  full_name: Modic, Kimberly A
  id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
  last_name: Modic
  orcid: 0000-0001-9760-3147
- first_name: Tobias
  full_name: Meng, Tobias
  last_name: Meng
- first_name: Filip
  full_name: Ronning, Filip
  last_name: Ronning
- first_name: Eric D.
  full_name: Bauer, Eric D.
  last_name: Bauer
- first_name: Philip J. W.
  full_name: Moll, Philip J. W.
  last_name: Moll
- first_name: B. J.
  full_name: Ramshaw, B. J.
  last_name: Ramshaw
citation:
  ama: Modic KA, Meng T, Ronning F, Bauer ED, Moll PJW, Ramshaw BJ. Thermodynamic
    signatures of Weyl fermions in NbP. <i>Scientific Reports</i>. 2019;9(1). doi:<a
    href="https://doi.org/10.1038/s41598-018-38161-7">10.1038/s41598-018-38161-7</a>
  apa: Modic, K. A., Meng, T., Ronning, F., Bauer, E. D., Moll, P. J. W., &#38; Ramshaw,
    B. J. (2019). Thermodynamic signatures of Weyl fermions in NbP. <i>Scientific
    Reports</i>. Springer Nature. <a href="https://doi.org/10.1038/s41598-018-38161-7">https://doi.org/10.1038/s41598-018-38161-7</a>
  chicago: Modic, Kimberly A, Tobias Meng, Filip Ronning, Eric D. Bauer, Philip J.
    W. Moll, and B. J. Ramshaw. “Thermodynamic Signatures of Weyl Fermions in NbP.”
    <i>Scientific Reports</i>. Springer Nature, 2019. <a href="https://doi.org/10.1038/s41598-018-38161-7">https://doi.org/10.1038/s41598-018-38161-7</a>.
  ieee: K. A. Modic, T. Meng, F. Ronning, E. D. Bauer, P. J. W. Moll, and B. J. Ramshaw,
    “Thermodynamic signatures of Weyl fermions in NbP,” <i>Scientific Reports</i>,
    vol. 9, no. 1. Springer Nature, 2019.
  ista: Modic KA, Meng T, Ronning F, Bauer ED, Moll PJW, Ramshaw BJ. 2019. Thermodynamic
    signatures of Weyl fermions in NbP. Scientific Reports. 9(1), 2095.
  mla: Modic, Kimberly A., et al. “Thermodynamic Signatures of Weyl Fermions in NbP.”
    <i>Scientific Reports</i>, vol. 9, no. 1, 2095, Springer Nature, 2019, doi:<a
    href="https://doi.org/10.1038/s41598-018-38161-7">10.1038/s41598-018-38161-7</a>.
  short: K.A. Modic, T. Meng, F. Ronning, E.D. Bauer, P.J.W. Moll, B.J. Ramshaw, Scientific
    Reports 9 (2019).
date_created: 2019-11-19T13:00:35Z
date_published: 2019-02-14T00:00:00Z
date_updated: 2021-01-12T08:11:36Z
day: '14'
ddc:
- '530'
doi: 10.1038/s41598-018-38161-7
extern: '1'
file:
- access_level: open_access
  checksum: 3b5a7b316e1ff22aa0f89e8d1f1ace91
  content_type: application/pdf
  creator: dernst
  date_created: 2019-11-20T12:24:13Z
  date_updated: 2020-07-14T12:47:48Z
  file_id: '7086'
  file_name: 2019_ScientificReports_Modic.pdf
  file_size: 3256400
  relation: main_file
file_date_updated: 2020-07-14T12:47:48Z
has_accepted_license: '1'
intvolume: '         9'
issue: '1'
language:
- iso: eng
month: '02'
oa: 1
oa_version: Published Version
publication: Scientific Reports
publication_identifier:
  issn:
  - 2045-2322
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
status: public
title: Thermodynamic signatures of Weyl fermions in NbP
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 9
year: '2019'
...
---
_id: '7082'
abstract:
- lang: eng
  text: Although crystals of strongly correlated metals exhibit a diverse set of electronic
    ground states, few approaches exist for spatially modulating their properties.
    In this study, we demonstrate disorder-free control, on the micrometer scale,
    over the superconducting state in samples of the heavy-fermion superconductor
    CeIrIn5. We pattern crystals by focused ion beam milling to tailor the boundary
    conditions for the elastic deformation upon thermal contraction during cooling.
    The resulting nonuniform strain fields induce complex patterns of superconductivity,
    owing to the strong dependence of the transition temperature on the strength and
    direction of strain. These results showcase a generic approach to manipulating
    electronic order on micrometer length scales in strongly correlated matter without
    compromising the cleanliness, stoichiometry, or mean free path.
article_processing_charge: No
article_type: original
author:
- first_name: Maja D.
  full_name: Bachmann, Maja D.
  last_name: Bachmann
- first_name: G. M.
  full_name: Ferguson, G. M.
  last_name: Ferguson
- first_name: Florian
  full_name: Theuss, Florian
  last_name: Theuss
- first_name: Tobias
  full_name: Meng, Tobias
  last_name: Meng
- first_name: Carsten
  full_name: Putzke, Carsten
  last_name: Putzke
- first_name: Toni
  full_name: Helm, Toni
  last_name: Helm
- first_name: K. R.
  full_name: Shirer, K. R.
  last_name: Shirer
- first_name: You-Sheng
  full_name: Li, You-Sheng
  last_name: Li
- first_name: Kimberly A
  full_name: Modic, Kimberly A
  id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
  last_name: Modic
  orcid: 0000-0001-9760-3147
- first_name: Michael
  full_name: Nicklas, Michael
  last_name: Nicklas
- first_name: Markus
  full_name: König, Markus
  last_name: König
- first_name: D.
  full_name: Low, D.
  last_name: Low
- first_name: Sayak
  full_name: Ghosh, Sayak
  last_name: Ghosh
- first_name: Andrew P.
  full_name: Mackenzie, Andrew P.
  last_name: Mackenzie
- first_name: Frank
  full_name: Arnold, Frank
  last_name: Arnold
- first_name: Elena
  full_name: Hassinger, Elena
  last_name: Hassinger
- first_name: Ross D.
  full_name: McDonald, Ross D.
  last_name: McDonald
- first_name: Laurel E.
  full_name: Winter, Laurel E.
  last_name: Winter
- first_name: Eric D.
  full_name: Bauer, Eric D.
  last_name: Bauer
- first_name: Filip
  full_name: Ronning, Filip
  last_name: Ronning
- first_name: B. J.
  full_name: Ramshaw, B. J.
  last_name: Ramshaw
- first_name: Katja C.
  full_name: Nowack, Katja C.
  last_name: Nowack
- first_name: Philip J. W.
  full_name: Moll, Philip J. W.
  last_name: Moll
citation:
  ama: Bachmann MD, Ferguson GM, Theuss F, et al. Spatial control of heavy-fermion
    superconductivity in CeIrIn5. <i>Science</i>. 2019;366(6462):221-226. doi:<a href="https://doi.org/10.1126/science.aao6640">10.1126/science.aao6640</a>
  apa: Bachmann, M. D., Ferguson, G. M., Theuss, F., Meng, T., Putzke, C., Helm, T.,
    … Moll, P. J. W. (2019). Spatial control of heavy-fermion superconductivity in
    CeIrIn5. <i>Science</i>. AAAS. <a href="https://doi.org/10.1126/science.aao6640">https://doi.org/10.1126/science.aao6640</a>
  chicago: Bachmann, Maja D., G. M. Ferguson, Florian Theuss, Tobias Meng, Carsten
    Putzke, Toni Helm, K. R. Shirer, et al. “Spatial Control of Heavy-Fermion Superconductivity
    in CeIrIn5.” <i>Science</i>. AAAS, 2019. <a href="https://doi.org/10.1126/science.aao6640">https://doi.org/10.1126/science.aao6640</a>.
  ieee: M. D. Bachmann <i>et al.</i>, “Spatial control of heavy-fermion superconductivity
    in CeIrIn5,” <i>Science</i>, vol. 366, no. 6462. AAAS, pp. 221–226, 2019.
  ista: Bachmann MD, Ferguson GM, Theuss F, Meng T, Putzke C, Helm T, Shirer KR, Li
    Y-S, Modic KA, Nicklas M, König M, Low D, Ghosh S, Mackenzie AP, Arnold F, Hassinger
    E, McDonald RD, Winter LE, Bauer ED, Ronning F, Ramshaw BJ, Nowack KC, Moll PJW.
    2019. Spatial control of heavy-fermion superconductivity in CeIrIn5. Science.
    366(6462), 221–226.
  mla: Bachmann, Maja D., et al. “Spatial Control of Heavy-Fermion Superconductivity
    in CeIrIn5.” <i>Science</i>, vol. 366, no. 6462, AAAS, 2019, pp. 221–26, doi:<a
    href="https://doi.org/10.1126/science.aao6640">10.1126/science.aao6640</a>.
  short: M.D. Bachmann, G.M. Ferguson, F. Theuss, T. Meng, C. Putzke, T. Helm, K.R.
    Shirer, Y.-S. Li, K.A. Modic, M. Nicklas, M. König, D. Low, S. Ghosh, A.P. Mackenzie,
    F. Arnold, E. Hassinger, R.D. McDonald, L.E. Winter, E.D. Bauer, F. Ronning, B.J.
    Ramshaw, K.C. Nowack, P.J.W. Moll, Science 366 (2019) 221–226.
date_created: 2019-11-19T13:55:58Z
date_published: 2019-10-11T00:00:00Z
date_updated: 2021-01-12T08:11:46Z
day: '11'
doi: 10.1126/science.aao6640
extern: '1'
intvolume: '       366'
issue: '6462'
language:
- iso: eng
month: '10'
oa_version: None
page: 221-226
publication: Science
publication_identifier:
  eissn:
  - 1095-9203
  issn:
  - 0036-8075
publication_status: published
publisher: AAAS
quality_controlled: '1'
status: public
title: Spatial control of heavy-fermion superconductivity in CeIrIn5
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 366
year: '2019'
...
---
_id: '7058'
abstract:
- lang: eng
  text: We examine recent magnetic torque measurements in two compounds, γ−Li2IrO3
    and RuCl3, which have been discussed as possible realizations of the Kitaev model.
    The analysis of the reported discontinuity in torque, as an external magnetic
    field is rotated across the c axis in both crystals, suggests that they have a
    translationally invariant chiral spin order of the form ⟨Si⋅(Sj×Sk)⟩≠0 in the
    ground state and persisting over a very wide range of magnetic field and temperature.
    An extraordinary |B|B2 dependence of the torque for small fields, beside the usual
    B2 part, is predicted by the chiral spin order. Data for small fields are available
    for γ−Li2IrO3 and are found to be consistent with the prediction upon further
    analysis. Other experiments such as inelastic scattering and thermal Hall effect
    and several questions raised by the discovery of chiral spin order, including
    its topological consequences, are discussed.
article_number: '205110 '
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Kimberly A
  full_name: Modic, Kimberly A
  id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
  last_name: Modic
  orcid: 0000-0001-9760-3147
- first_name: B. J.
  full_name: Ramshaw, B. J.
  last_name: Ramshaw
- first_name: A.
  full_name: Shekhter, A.
  last_name: Shekhter
- first_name: C. M.
  full_name: Varma, C. M.
  last_name: Varma
citation:
  ama: Modic KA, Ramshaw BJ, Shekhter A, Varma CM. Chiral spin order in some purported
    Kitaev spin-liquid compounds. <i>Physical Review B</i>. 2018;98(20). doi:<a href="https://doi.org/10.1103/physrevb.98.205110">10.1103/physrevb.98.205110</a>
  apa: Modic, K. A., Ramshaw, B. J., Shekhter, A., &#38; Varma, C. M. (2018). Chiral
    spin order in some purported Kitaev spin-liquid compounds. <i>Physical Review
    B</i>. APS. <a href="https://doi.org/10.1103/physrevb.98.205110">https://doi.org/10.1103/physrevb.98.205110</a>
  chicago: Modic, Kimberly A, B. J. Ramshaw, A. Shekhter, and C. M. Varma. “Chiral
    Spin Order in Some Purported Kitaev Spin-Liquid Compounds.” <i>Physical Review
    B</i>. APS, 2018. <a href="https://doi.org/10.1103/physrevb.98.205110">https://doi.org/10.1103/physrevb.98.205110</a>.
  ieee: K. A. Modic, B. J. Ramshaw, A. Shekhter, and C. M. Varma, “Chiral spin order
    in some purported Kitaev spin-liquid compounds,” <i>Physical Review B</i>, vol.
    98, no. 20. APS, 2018.
  ista: Modic KA, Ramshaw BJ, Shekhter A, Varma CM. 2018. Chiral spin order in some
    purported Kitaev spin-liquid compounds. Physical Review B. 98(20), 205110.
  mla: Modic, Kimberly A., et al. “Chiral Spin Order in Some Purported Kitaev Spin-Liquid
    Compounds.” <i>Physical Review B</i>, vol. 98, no. 20, 205110, APS, 2018, doi:<a
    href="https://doi.org/10.1103/physrevb.98.205110">10.1103/physrevb.98.205110</a>.
  short: K.A. Modic, B.J. Ramshaw, A. Shekhter, C.M. Varma, Physical Review B 98 (2018).
date_created: 2019-11-19T13:01:31Z
date_published: 2018-11-05T00:00:00Z
date_updated: 2021-01-12T08:11:36Z
day: '05'
doi: 10.1103/physrevb.98.205110
extern: '1'
external_id:
  arxiv:
  - '1807.06637'
intvolume: '        98'
issue: '20'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1807.06637
month: '11'
oa: 1
oa_version: Preprint
publication: Physical Review B
publication_identifier:
  eissn:
  - 2469-9969
  issn:
  - 2469-9950
publication_status: published
publisher: APS
quality_controlled: '1'
status: public
title: Chiral spin order in some purported Kitaev spin-liquid compounds
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 98
year: '2018'
...
---
_id: '7059'
abstract:
- lang: eng
  text: Unusual behavior in quantum materials commonly arises from their effective
    low-dimensional physics, reflecting the underlying anisotropy in the spin and
    charge degrees of freedom. Here we introduce the magnetotropic coefficient k = ∂2F/∂θ2,
    the second derivative of the free energy F with respect to the magnetic field
    orientation θ in the crystal. We show that the magnetotropic coefficient can be
    quantitatively determined from a shift in the resonant frequency of a commercially
    available atomic force microscopy cantilever under magnetic field. This detection
    method enables part per 100 million sensitivity and the ability to measure magnetic
    anisotropy in nanogram-scale samples, as demonstrated on the Weyl semimetal NbP.
    Measurement of the magnetotropic coefficient in the spin-liquid candidate RuCl3
    highlights its sensitivity to anisotropic phase transitions and allows a quantitative
    comparison to other thermodynamic coefficients via the Ehrenfest relations.
article_processing_charge: No
article_type: original
author:
- first_name: Kimberly A
  full_name: Modic, Kimberly A
  id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
  last_name: Modic
  orcid: 0000-0001-9760-3147
- first_name: Maja D.
  full_name: Bachmann, Maja D.
  last_name: Bachmann
- first_name: B. J.
  full_name: Ramshaw, B. J.
  last_name: Ramshaw
- first_name: F.
  full_name: Arnold, F.
  last_name: Arnold
- first_name: K. R.
  full_name: Shirer, K. R.
  last_name: Shirer
- first_name: Amelia
  full_name: Estry, Amelia
  last_name: Estry
- first_name: J. B.
  full_name: Betts, J. B.
  last_name: Betts
- first_name: Nirmal J.
  full_name: Ghimire, Nirmal J.
  last_name: Ghimire
- first_name: E. D.
  full_name: Bauer, E. D.
  last_name: Bauer
- first_name: Marcus
  full_name: Schmidt, Marcus
  last_name: Schmidt
- first_name: Michael
  full_name: Baenitz, Michael
  last_name: Baenitz
- first_name: E.
  full_name: Svanidze, E.
  last_name: Svanidze
- first_name: Ross D.
  full_name: McDonald, Ross D.
  last_name: McDonald
- first_name: Arkady
  full_name: Shekhter, Arkady
  last_name: Shekhter
- first_name: Philip J. W.
  full_name: Moll, Philip J. W.
  last_name: Moll
citation:
  ama: Modic KA, Bachmann MD, Ramshaw BJ, et al. Resonant torsion magnetometry in
    anisotropic quantum materials. <i>Nature Communications</i>. 2018;9(1):3975. doi:<a
    href="https://doi.org/10.1038/s41467-018-06412-w">10.1038/s41467-018-06412-w</a>
  apa: Modic, K. A., Bachmann, M. D., Ramshaw, B. J., Arnold, F., Shirer, K. R., Estry,
    A., … Moll, P. J. W. (2018). Resonant torsion magnetometry in anisotropic quantum
    materials. <i>Nature Communications</i>. Springer Nature. <a href="https://doi.org/10.1038/s41467-018-06412-w">https://doi.org/10.1038/s41467-018-06412-w</a>
  chicago: Modic, Kimberly A, Maja D. Bachmann, B. J. Ramshaw, F. Arnold, K. R. Shirer,
    Amelia Estry, J. B. Betts, et al. “Resonant Torsion Magnetometry in Anisotropic
    Quantum Materials.” <i>Nature Communications</i>. Springer Nature, 2018. <a href="https://doi.org/10.1038/s41467-018-06412-w">https://doi.org/10.1038/s41467-018-06412-w</a>.
  ieee: K. A. Modic <i>et al.</i>, “Resonant torsion magnetometry in anisotropic quantum
    materials,” <i>Nature Communications</i>, vol. 9, no. 1. Springer Nature, p. 3975,
    2018.
  ista: Modic KA, Bachmann MD, Ramshaw BJ, Arnold F, Shirer KR, Estry A, Betts JB,
    Ghimire NJ, Bauer ED, Schmidt M, Baenitz M, Svanidze E, McDonald RD, Shekhter
    A, Moll PJW. 2018. Resonant torsion magnetometry in anisotropic quantum materials.
    Nature Communications. 9(1), 3975.
  mla: Modic, Kimberly A., et al. “Resonant Torsion Magnetometry in Anisotropic Quantum
    Materials.” <i>Nature Communications</i>, vol. 9, no. 1, Springer Nature, 2018,
    p. 3975, doi:<a href="https://doi.org/10.1038/s41467-018-06412-w">10.1038/s41467-018-06412-w</a>.
  short: K.A. Modic, M.D. Bachmann, B.J. Ramshaw, F. Arnold, K.R. Shirer, A. Estry,
    J.B. Betts, N.J. Ghimire, E.D. Bauer, M. Schmidt, M. Baenitz, E. Svanidze, R.D.
    McDonald, A. Shekhter, P.J.W. Moll, Nature Communications 9 (2018) 3975.
date_created: 2019-11-19T13:02:20Z
date_published: 2018-09-28T00:00:00Z
date_updated: 2021-01-12T08:11:37Z
day: '28'
ddc:
- '530'
doi: 10.1038/s41467-018-06412-w
extern: '1'
file:
- access_level: open_access
  checksum: 46a313c816e66899d4dad2cf3583e5b0
  content_type: application/pdf
  creator: dernst
  date_created: 2019-11-20T12:48:58Z
  date_updated: 2020-07-14T12:47:48Z
  file_id: '7088'
  file_name: 2018_NatureComm_Modic.pdf
  file_size: 1257681
  relation: main_file
file_date_updated: 2020-07-14T12:47:48Z
has_accepted_license: '1'
intvolume: '         9'
issue: '1'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
page: '3975'
publication: Nature Communications
publication_identifier:
  issn:
  - 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
status: public
title: Resonant torsion magnetometry in anisotropic quantum materials
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 9
year: '2018'
...
---
_id: '7060'
abstract:
- lang: eng
  text: The anomalous metallic state in the high-temperature superconducting cuprates
    is masked by superconductivity near a quantum critical point. Applying high magnetic
    fields to suppress superconductivity has enabled detailed studies of the normal
    state, yet the direct effect of strong magnetic fields on the metallic state is
    poorly understood. We report the high-field magnetoresistance of thin-film La2–xSrxCuO4
    cuprate in the vicinity of the critical doping, 0.161 ≤ p ≤ 0.190. We find that
    the metallic state exposed by suppressing superconductivity is characterized by
    magnetoresistance that is linear in magnetic fields up to 80 tesla. The magnitude
    of the linear-in-field resistivity mirrors the magnitude and doping evolution
    of the well-known linear-in-temperature resistivity that has been associated with
    quantum criticality in high-temperature superconductors.
article_processing_charge: No
article_type: original
author:
- first_name: P.
  full_name: Giraldo-Gallo, P.
  last_name: Giraldo-Gallo
- first_name: J. A.
  full_name: Galvis, J. A.
  last_name: Galvis
- first_name: Z.
  full_name: Stegen, Z.
  last_name: Stegen
- first_name: Kimberly A
  full_name: Modic, Kimberly A
  id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
  last_name: Modic
  orcid: 0000-0001-9760-3147
- first_name: F. F.
  full_name: Balakirev, F. F.
  last_name: Balakirev
- first_name: J. B.
  full_name: Betts, J. B.
  last_name: Betts
- first_name: X.
  full_name: Lian, X.
  last_name: Lian
- first_name: C.
  full_name: Moir, C.
  last_name: Moir
- first_name: S. C.
  full_name: Riggs, S. C.
  last_name: Riggs
- first_name: J.
  full_name: Wu, J.
  last_name: Wu
- first_name: A. T.
  full_name: Bollinger, A. T.
  last_name: Bollinger
- first_name: X.
  full_name: He, X.
  last_name: He
- first_name: I.
  full_name: Božović, I.
  last_name: Božović
- first_name: B. J.
  full_name: Ramshaw, B. J.
  last_name: Ramshaw
- first_name: R. D.
  full_name: McDonald, R. D.
  last_name: McDonald
- first_name: G. S.
  full_name: Boebinger, G. S.
  last_name: Boebinger
- first_name: A.
  full_name: Shekhter, A.
  last_name: Shekhter
citation:
  ama: Giraldo-Gallo P, Galvis JA, Stegen Z, et al. Scale-invariant magnetoresistance
    in a cuprate superconductor. <i>Science</i>. 2018;361(6401):479-481. doi:<a href="https://doi.org/10.1126/science.aan3178">10.1126/science.aan3178</a>
  apa: Giraldo-Gallo, P., Galvis, J. A., Stegen, Z., Modic, K. A., Balakirev, F. F.,
    Betts, J. B., … Shekhter, A. (2018). Scale-invariant magnetoresistance in a cuprate
    superconductor. <i>Science</i>. AAAS. <a href="https://doi.org/10.1126/science.aan3178">https://doi.org/10.1126/science.aan3178</a>
  chicago: Giraldo-Gallo, P., J. A. Galvis, Z. Stegen, Kimberly A Modic, F. F. Balakirev,
    J. B. Betts, X. Lian, et al. “Scale-Invariant Magnetoresistance in a Cuprate Superconductor.”
    <i>Science</i>. AAAS, 2018. <a href="https://doi.org/10.1126/science.aan3178">https://doi.org/10.1126/science.aan3178</a>.
  ieee: P. Giraldo-Gallo <i>et al.</i>, “Scale-invariant magnetoresistance in a cuprate
    superconductor,” <i>Science</i>, vol. 361, no. 6401. AAAS, pp. 479–481, 2018.
  ista: Giraldo-Gallo P, Galvis JA, Stegen Z, Modic KA, Balakirev FF, Betts JB, Lian
    X, Moir C, Riggs SC, Wu J, Bollinger AT, He X, Božović I, Ramshaw BJ, McDonald
    RD, Boebinger GS, Shekhter A. 2018. Scale-invariant magnetoresistance in a cuprate
    superconductor. Science. 361(6401), 479–481.
  mla: Giraldo-Gallo, P., et al. “Scale-Invariant Magnetoresistance in a Cuprate Superconductor.”
    <i>Science</i>, vol. 361, no. 6401, AAAS, 2018, pp. 479–81, doi:<a href="https://doi.org/10.1126/science.aan3178">10.1126/science.aan3178</a>.
  short: P. Giraldo-Gallo, J.A. Galvis, Z. Stegen, K.A. Modic, F.F. Balakirev, J.B.
    Betts, X. Lian, C. Moir, S.C. Riggs, J. Wu, A.T. Bollinger, X. He, I. Božović,
    B.J. Ramshaw, R.D. McDonald, G.S. Boebinger, A. Shekhter, Science 361 (2018) 479–481.
date_created: 2019-11-19T13:03:16Z
date_published: 2018-08-03T00:00:00Z
date_updated: 2021-01-12T08:11:37Z
day: '03'
doi: 10.1126/science.aan3178
extern: '1'
intvolume: '       361'
issue: '6401'
language:
- iso: eng
month: '08'
oa_version: None
page: 479-481
publication: Science
publication_identifier:
  eissn:
  - 1095-9203
  issn:
  - 0036-8075
publication_status: published
publisher: AAAS
quality_controlled: '1'
status: public
title: Scale-invariant magnetoresistance in a cuprate superconductor
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 361
year: '2018'
...
---
_id: '7062'
abstract:
- lang: eng
  text: 'Weyl fermions are a recently discovered ingredient for correlated states
    of electronic matter. A key difficulty has been that real materials also contain
    non-Weyl quasiparticles, and disentangling the experimental signatures has proven
    challenging. Here we use magnetic fields up to 95 T to drive the Weyl semimetal
    TaAs far into its quantum limit, where only the purely chiral 0th Landau levels
    of the Weyl fermions are occupied. We find the electrical resistivity to be nearly
    independent of magnetic field up to 50 T: unusual for conventional metals but
    consistent with the chiral anomaly for Weyl fermions. Above 50 T we observe a
    two-order-of-magnitude increase in resistivity, indicating that a gap opens in
    the chiral Landau levels. Above 80 T we observe strong ultrasonic attenuation
    below 2 K, suggesting a mesoscopically textured state of matter. These results
    point the way to inducing new correlated states of matter in the quantum limit
    of Weyl semimetals.'
article_number: '2217'
article_processing_charge: No
article_type: original
author:
- first_name: B. J.
  full_name: Ramshaw, B. J.
  last_name: Ramshaw
- first_name: Kimberly A
  full_name: Modic, Kimberly A
  id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
  last_name: Modic
  orcid: 0000-0001-9760-3147
- first_name: Arkady
  full_name: Shekhter, Arkady
  last_name: Shekhter
- first_name: Yi
  full_name: Zhang, Yi
  last_name: Zhang
- first_name: Eun-Ah
  full_name: Kim, Eun-Ah
  last_name: Kim
- first_name: Philip J. W.
  full_name: Moll, Philip J. W.
  last_name: Moll
- first_name: Maja D.
  full_name: Bachmann, Maja D.
  last_name: Bachmann
- first_name: M. K.
  full_name: Chan, M. K.
  last_name: Chan
- first_name: J. B.
  full_name: Betts, J. B.
  last_name: Betts
- first_name: F.
  full_name: Balakirev, F.
  last_name: Balakirev
- first_name: A.
  full_name: Migliori, A.
  last_name: Migliori
- first_name: N. J.
  full_name: Ghimire, N. J.
  last_name: Ghimire
- first_name: E. D.
  full_name: Bauer, E. D.
  last_name: Bauer
- first_name: F.
  full_name: Ronning, F.
  last_name: Ronning
- first_name: R. D.
  full_name: McDonald, R. D.
  last_name: McDonald
citation:
  ama: Ramshaw BJ, Modic KA, Shekhter A, et al. Quantum limit transport and destruction
    of the Weyl nodes in TaAs. <i>Nature Communications</i>. 2018;9(1). doi:<a href="https://doi.org/10.1038/s41467-018-04542-9">10.1038/s41467-018-04542-9</a>
  apa: Ramshaw, B. J., Modic, K. A., Shekhter, A., Zhang, Y., Kim, E.-A., Moll, P.
    J. W., … McDonald, R. D. (2018). Quantum limit transport and destruction of the
    Weyl nodes in TaAs. <i>Nature Communications</i>. Springer Nature. <a href="https://doi.org/10.1038/s41467-018-04542-9">https://doi.org/10.1038/s41467-018-04542-9</a>
  chicago: Ramshaw, B. J., Kimberly A Modic, Arkady Shekhter, Yi Zhang, Eun-Ah Kim,
    Philip J. W. Moll, Maja D. Bachmann, et al. “Quantum Limit Transport and Destruction
    of the Weyl Nodes in TaAs.” <i>Nature Communications</i>. Springer Nature, 2018.
    <a href="https://doi.org/10.1038/s41467-018-04542-9">https://doi.org/10.1038/s41467-018-04542-9</a>.
  ieee: B. J. Ramshaw <i>et al.</i>, “Quantum limit transport and destruction of the
    Weyl nodes in TaAs,” <i>Nature Communications</i>, vol. 9, no. 1. Springer Nature,
    2018.
  ista: Ramshaw BJ, Modic KA, Shekhter A, Zhang Y, Kim E-A, Moll PJW, Bachmann MD,
    Chan MK, Betts JB, Balakirev F, Migliori A, Ghimire NJ, Bauer ED, Ronning F, McDonald
    RD. 2018. Quantum limit transport and destruction of the Weyl nodes in TaAs. Nature
    Communications. 9(1), 2217.
  mla: Ramshaw, B. J., et al. “Quantum Limit Transport and Destruction of the Weyl
    Nodes in TaAs.” <i>Nature Communications</i>, vol. 9, no. 1, 2217, Springer Nature,
    2018, doi:<a href="https://doi.org/10.1038/s41467-018-04542-9">10.1038/s41467-018-04542-9</a>.
  short: B.J. Ramshaw, K.A. Modic, A. Shekhter, Y. Zhang, E.-A. Kim, P.J.W. Moll,
    M.D. Bachmann, M.K. Chan, J.B. Betts, F. Balakirev, A. Migliori, N.J. Ghimire,
    E.D. Bauer, F. Ronning, R.D. McDonald, Nature Communications 9 (2018).
date_created: 2019-11-19T13:10:33Z
date_published: 2018-06-07T00:00:00Z
date_updated: 2021-01-12T08:11:38Z
day: '07'
ddc:
- '530'
doi: 10.1038/s41467-018-04542-9
extern: '1'
file:
- access_level: open_access
  checksum: 9c53f9a1f06a4d83d5fe879d2478b7d7
  content_type: application/pdf
  creator: dernst
  date_created: 2019-11-20T13:55:44Z
  date_updated: 2020-07-14T12:47:48Z
  file_id: '7089'
  file_name: 2018_NatureComm_Ramshaw.pdf
  file_size: 1794797
  relation: main_file
file_date_updated: 2020-07-14T12:47:48Z
has_accepted_license: '1'
intvolume: '         9'
issue: '1'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
publication: Nature Communications
publication_identifier:
  issn:
  - 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
status: public
title: Quantum limit transport and destruction of the Weyl nodes in TaAs
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 9
year: '2018'
...
---
_id: '7063'
abstract:
- lang: eng
  text: The high-pressure synthesis and incommensurately modulated structure are reported
    for the new compound Sr2Pt8−xAs, with x = 0.715 (5). The structure consists of
    Sr2Pt3As layers alternating with Pt-only corrugated grids. Ab initio calculations
    predict a metallic character with a dominant role of the Pt d electrons. The electrical
    resistivity (ρ) and Seebeck coefficient confirm the metallic character, but surprisingly,
    ρ showed a near-flat temperature dependence. This observation fits the description
    of the Mooij correlation for electrical resistivity in disordered metals, originally
    developed for statistically distributed point defects. The discussed material
    has a long-range crystallographic order, but the high concentration of Pt vacancies,
    incommensurately ordered, strongly influences the electronic conduction properties.
    This result extends the range of validity of the Mooij correlation to long-range
    ordered incommensurately modulated vacancies. Motivated by the layered structure,
    the resistivity anisotropy was measured in a focused-ion-beam micro-fabricated
    well oriented single crystal. A low resistivity anisotropy indicates that the
    layers are electrically coupled and conduction channels along different directions
    are intermixed.
article_processing_charge: No
article_type: original
author:
- first_name: Edoardo
  full_name: Martino, Edoardo
  last_name: Martino
- first_name: Alla
  full_name: Arakcheeva, Alla
  last_name: Arakcheeva
- first_name: Gabriel
  full_name: Autès, Gabriel
  last_name: Autès
- first_name: Andrea
  full_name: Pisoni, Andrea
  last_name: Pisoni
- first_name: Maja D.
  full_name: Bachmann, Maja D.
  last_name: Bachmann
- first_name: Kimberly A
  full_name: Modic, Kimberly A
  id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
  last_name: Modic
  orcid: 0000-0001-9760-3147
- first_name: Toni
  full_name: Helm, Toni
  last_name: Helm
- first_name: Oleg V.
  full_name: Yazyev, Oleg V.
  last_name: Yazyev
- first_name: Philip J. W.
  full_name: Moll, Philip J. W.
  last_name: Moll
- first_name: László
  full_name: Forró, László
  last_name: Forró
- first_name: Sergiy
  full_name: Katrych, Sergiy
  last_name: Katrych
citation:
  ama: 'Martino E, Arakcheeva A, Autès G, et al. Sr2Pt8−xAs: A layered incommensurately
    modulated metal with saturated resistivity. <i>IUCrJ</i>. 2018;5(4):470-477. doi:<a
    href="https://doi.org/10.1107/s2052252518007303">10.1107/s2052252518007303</a>'
  apa: 'Martino, E., Arakcheeva, A., Autès, G., Pisoni, A., Bachmann, M. D., Modic,
    K. A., … Katrych, S. (2018). Sr2Pt8−xAs: A layered incommensurately modulated
    metal with saturated resistivity. <i>IUCrJ</i>. International Union of Crystallography
    (IUCr). <a href="https://doi.org/10.1107/s2052252518007303">https://doi.org/10.1107/s2052252518007303</a>'
  chicago: 'Martino, Edoardo, Alla Arakcheeva, Gabriel Autès, Andrea Pisoni, Maja
    D. Bachmann, Kimberly A Modic, Toni Helm, et al. “Sr2Pt8−xAs: A Layered Incommensurately
    Modulated Metal with Saturated Resistivity.” <i>IUCrJ</i>. International Union
    of Crystallography (IUCr), 2018. <a href="https://doi.org/10.1107/s2052252518007303">https://doi.org/10.1107/s2052252518007303</a>.'
  ieee: 'E. Martino <i>et al.</i>, “Sr2Pt8−xAs: A layered incommensurately modulated
    metal with saturated resistivity,” <i>IUCrJ</i>, vol. 5, no. 4. International
    Union of Crystallography (IUCr), pp. 470–477, 2018.'
  ista: 'Martino E, Arakcheeva A, Autès G, Pisoni A, Bachmann MD, Modic KA, Helm T,
    Yazyev OV, Moll PJW, Forró L, Katrych S. 2018. Sr2Pt8−xAs: A layered incommensurately
    modulated metal with saturated resistivity. IUCrJ. 5(4), 470–477.'
  mla: 'Martino, Edoardo, et al. “Sr2Pt8−xAs: A Layered Incommensurately Modulated
    Metal with Saturated Resistivity.” <i>IUCrJ</i>, vol. 5, no. 4, International
    Union of Crystallography (IUCr), 2018, pp. 470–77, doi:<a href="https://doi.org/10.1107/s2052252518007303">10.1107/s2052252518007303</a>.'
  short: E. Martino, A. Arakcheeva, G. Autès, A. Pisoni, M.D. Bachmann, K.A. Modic,
    T. Helm, O.V. Yazyev, P.J.W. Moll, L. Forró, S. Katrych, IUCrJ 5 (2018) 470–477.
date_created: 2019-11-19T13:11:15Z
date_published: 2018-07-01T00:00:00Z
date_updated: 2021-01-12T08:11:38Z
day: '01'
ddc:
- '530'
doi: 10.1107/s2052252518007303
extern: '1'
file:
- access_level: open_access
  checksum: 5c6180c7d19da599dd50a067eb2efd50
  content_type: application/pdf
  creator: dernst
  date_created: 2019-11-20T14:00:27Z
  date_updated: 2020-07-14T12:47:48Z
  file_id: '7090'
  file_name: 2018_IUCrJ_Martino.pdf
  file_size: 1563353
  relation: main_file
file_date_updated: 2020-07-14T12:47:48Z
has_accepted_license: '1'
intvolume: '         5'
issue: '4'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
page: 470-477
publication: IUCrJ
publication_identifier:
  eissn:
  - 2052-2525
publication_status: published
publisher: International Union of Crystallography (IUCr)
quality_controlled: '1'
status: public
title: 'Sr2Pt8−xAs: A layered incommensurately modulated metal with saturated resistivity'
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 5
year: '2018'
...
---
_id: '7064'
abstract:
- lang: eng
  text: 'The complex antiferromagnetic orders observed in the honeycomb iridates are
    a double-edged sword in the search for a quantum spin-liquid: both attesting that
    the magnetic interactions provide many of the necessary ingredients, while simultaneously
    impeding access. Focus has naturally been drawn to the unusual magnetic orders
    that hint at the underlying spin correlations. However, the study of any particular
    broken symmetry state generally provides little clue about the possibility of
    other nearby ground states. Here we use magnetic fields approaching 100 Tesla
    to reveal the extent of the spin correlations in γ-lithium iridate. We find that
    a small component of field along the magnetic easy-axis melts long-range order,
    revealing a bistable, strongly correlated spin state. Far from the usual destruction
    of antiferromagnetism via spin polarization, the high-field state possesses only
    a small fraction of the total iridium moment, without evidence for long-range
    order up to the highest attainable magnetic fields.'
article_number: '180'
article_processing_charge: No
article_type: original
author:
- first_name: Kimberly A
  full_name: Modic, Kimberly A
  id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
  last_name: Modic
  orcid: 0000-0001-9760-3147
- first_name: B. J.
  full_name: Ramshaw, B. J.
  last_name: Ramshaw
- first_name: J. B.
  full_name: Betts, J. B.
  last_name: Betts
- first_name: Nicholas P.
  full_name: Breznay, Nicholas P.
  last_name: Breznay
- first_name: James G.
  full_name: Analytis, James G.
  last_name: Analytis
- first_name: Ross D.
  full_name: McDonald, Ross D.
  last_name: McDonald
- first_name: Arkady
  full_name: Shekhter, Arkady
  last_name: Shekhter
citation:
  ama: Modic KA, Ramshaw BJ, Betts JB, et al. Robust spin correlations at high magnetic
    fields in the harmonic honeycomb iridates. <i>Nature Communications</i>. 2017;8(1).
    doi:<a href="https://doi.org/10.1038/s41467-017-00264-6">10.1038/s41467-017-00264-6</a>
  apa: Modic, K. A., Ramshaw, B. J., Betts, J. B., Breznay, N. P., Analytis, J. G.,
    McDonald, R. D., &#38; Shekhter, A. (2017). Robust spin correlations at high magnetic
    fields in the harmonic honeycomb iridates. <i>Nature Communications</i>. Springer
    Nature. <a href="https://doi.org/10.1038/s41467-017-00264-6">https://doi.org/10.1038/s41467-017-00264-6</a>
  chicago: Modic, Kimberly A, B. J. Ramshaw, J. B. Betts, Nicholas P. Breznay, James
    G. Analytis, Ross D. McDonald, and Arkady Shekhter. “Robust Spin Correlations
    at High Magnetic Fields in the Harmonic Honeycomb Iridates.” <i>Nature Communications</i>.
    Springer Nature, 2017. <a href="https://doi.org/10.1038/s41467-017-00264-6">https://doi.org/10.1038/s41467-017-00264-6</a>.
  ieee: K. A. Modic <i>et al.</i>, “Robust spin correlations at high magnetic fields
    in the harmonic honeycomb iridates,” <i>Nature Communications</i>, vol. 8, no.
    1. Springer Nature, 2017.
  ista: Modic KA, Ramshaw BJ, Betts JB, Breznay NP, Analytis JG, McDonald RD, Shekhter
    A. 2017. Robust spin correlations at high magnetic fields in the harmonic honeycomb
    iridates. Nature Communications. 8(1), 180.
  mla: Modic, Kimberly A., et al. “Robust Spin Correlations at High Magnetic Fields
    in the Harmonic Honeycomb Iridates.” <i>Nature Communications</i>, vol. 8, no.
    1, 180, Springer Nature, 2017, doi:<a href="https://doi.org/10.1038/s41467-017-00264-6">10.1038/s41467-017-00264-6</a>.
  short: K.A. Modic, B.J. Ramshaw, J.B. Betts, N.P. Breznay, J.G. Analytis, R.D. McDonald,
    A. Shekhter, Nature Communications 8 (2017).
date_created: 2019-11-19T13:11:55Z
date_published: 2017-08-01T00:00:00Z
date_updated: 2021-01-12T08:11:39Z
day: '01'
ddc:
- '530'
doi: 10.1038/s41467-017-00264-6
extern: '1'
file:
- access_level: open_access
  checksum: 57fcd59d2f274b6b16cc89ea03cfd440
  content_type: application/pdf
  creator: cziletti
  date_created: 2019-11-20T14:12:54Z
  date_updated: 2020-07-14T12:47:48Z
  file_id: '7091'
  file_name: 2017_NatureComm_Modic.pdf
  file_size: 1242958
  relation: main_file
file_date_updated: 2020-07-14T12:47:48Z
has_accepted_license: '1'
intvolume: '         8'
issue: '1'
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
publication: Nature Communications
publication_identifier:
  issn:
  - 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
status: public
title: Robust spin correlations at high magnetic fields in the harmonic honeycomb
  iridates
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 8
year: '2017'
...
---
_id: '7065'
abstract:
- lang: eng
  text: Magneto-quantum oscillation experiments in high-temperature superconductors
    show a strong thermally induced suppression of the oscillation amplitude approaching
    the critical dopings [B. J. Ramshaw et al., Science 348, 317 (2014); H. Shishido
    et al., Phys. Rev. Lett. 104, 057008 (2010); P. Walmsley et al., Phys. Rev. Lett.
    110, 257002 (2013)]—in support of a quantum-critical origin of their phase diagrams.
    We suggest that, in addition to a thermodynamic mass enhancement, these experiments
    may directly indicate the increasing role of quantum fluctuations that suppress
    the quantum oscillation amplitude through inelastic scattering. We show that the
    traditional theoretical approaches beyond Lifshitz-Kosevich to calculate the oscillation
    amplitude in correlated metals result in a contradiction with the third law of
    thermodynamics and suggest a way to rectify this problem.
article_number: '121106'
article_processing_charge: No
article_type: original
author:
- first_name: Arkady
  full_name: Shekhter, Arkady
  last_name: Shekhter
- first_name: Kimberly A
  full_name: Modic, Kimberly A
  id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
  last_name: Modic
  orcid: 0000-0001-9760-3147
- first_name: R. D.
  full_name: McDonald, R. D.
  last_name: McDonald
- first_name: B. J.
  full_name: Ramshaw, B. J.
  last_name: Ramshaw
citation:
  ama: Shekhter A, Modic KA, McDonald RD, Ramshaw BJ. Thermodynamic constraints on
    the amplitude of quantum oscillations. <i>Physical Review B</i>. 2017;95(12).
    doi:<a href="https://doi.org/10.1103/physrevb.95.121106">10.1103/physrevb.95.121106</a>
  apa: Shekhter, A., Modic, K. A., McDonald, R. D., &#38; Ramshaw, B. J. (2017). Thermodynamic
    constraints on the amplitude of quantum oscillations. <i>Physical Review B</i>.
    APS. <a href="https://doi.org/10.1103/physrevb.95.121106">https://doi.org/10.1103/physrevb.95.121106</a>
  chicago: Shekhter, Arkady, Kimberly A Modic, R. D. McDonald, and B. J. Ramshaw.
    “Thermodynamic Constraints on the Amplitude of Quantum Oscillations.” <i>Physical
    Review B</i>. APS, 2017. <a href="https://doi.org/10.1103/physrevb.95.121106">https://doi.org/10.1103/physrevb.95.121106</a>.
  ieee: A. Shekhter, K. A. Modic, R. D. McDonald, and B. J. Ramshaw, “Thermodynamic
    constraints on the amplitude of quantum oscillations,” <i>Physical Review B</i>,
    vol. 95, no. 12. APS, 2017.
  ista: Shekhter A, Modic KA, McDonald RD, Ramshaw BJ. 2017. Thermodynamic constraints
    on the amplitude of quantum oscillations. Physical Review B. 95(12), 121106.
  mla: Shekhter, Arkady, et al. “Thermodynamic Constraints on the Amplitude of Quantum
    Oscillations.” <i>Physical Review B</i>, vol. 95, no. 12, 121106, APS, 2017, doi:<a
    href="https://doi.org/10.1103/physrevb.95.121106">10.1103/physrevb.95.121106</a>.
  short: A. Shekhter, K.A. Modic, R.D. McDonald, B.J. Ramshaw, Physical Review B 95
    (2017).
date_created: 2019-11-19T13:12:27Z
date_published: 2017-03-27T00:00:00Z
date_updated: 2021-01-12T08:11:39Z
day: '27'
doi: 10.1103/physrevb.95.121106
extern: '1'
intvolume: '        95'
issue: '12'
language:
- iso: eng
month: '03'
oa_version: None
publication: Physical Review B
publication_identifier:
  eissn:
  - 2469-9969
  issn:
  - 2469-9950
publication_status: published
publisher: APS
quality_controlled: '1'
status: public
title: Thermodynamic constraints on the amplitude of quantum oscillations
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 95
year: '2017'
...
---
_id: '7066'
abstract:
- lang: eng
  text: The excitonic insulator phase has long been predicted to form in proximity
    to a band gap opening in the underlying band structure. The character of the pairing
    is conjectured to crossover from weak (BCS-like) to strong coupling (BEC-like)
    as the underlying band structure is tuned from the metallic to the insulating
    side of the gap opening. Here we report the high-magnetic field phase diagram
    of graphite to exhibit just such a crossover. By way of comprehensive angle-resolved
    magnetoresistance measurements, we demonstrate that the underlying band gap opening
    occurs inside the magnetic field-induced phase, paving the way for a systematic
    study of the BCS-BEC-like crossover by means of conventional condensed matter
    probes.
article_number: '1733'
article_processing_charge: No
article_type: original
author:
- first_name: Z.
  full_name: Zhu, Z.
  last_name: Zhu
- first_name: R. D.
  full_name: McDonald, R. D.
  last_name: McDonald
- first_name: A.
  full_name: Shekhter, A.
  last_name: Shekhter
- first_name: B. J.
  full_name: Ramshaw, B. J.
  last_name: Ramshaw
- first_name: Kimberly A
  full_name: Modic, Kimberly A
  id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
  last_name: Modic
  orcid: 0000-0001-9760-3147
- first_name: F. F.
  full_name: Balakirev, F. F.
  last_name: Balakirev
- first_name: N.
  full_name: Harrison, N.
  last_name: Harrison
citation:
  ama: Zhu Z, McDonald RD, Shekhter A, et al. Magnetic field tuning of an excitonic
    insulator between the weak and strong coupling regimes in quantum limit graphite.
    <i>Scientific Reports</i>. 2017;7. doi:<a href="https://doi.org/10.1038/s41598-017-01693-5">10.1038/s41598-017-01693-5</a>
  apa: Zhu, Z., McDonald, R. D., Shekhter, A., Ramshaw, B. J., Modic, K. A., Balakirev,
    F. F., &#38; Harrison, N. (2017). Magnetic field tuning of an excitonic insulator
    between the weak and strong coupling regimes in quantum limit graphite. <i>Scientific
    Reports</i>. Springer Nature. <a href="https://doi.org/10.1038/s41598-017-01693-5">https://doi.org/10.1038/s41598-017-01693-5</a>
  chicago: Zhu, Z., R. D. McDonald, A. Shekhter, B. J. Ramshaw, Kimberly A Modic,
    F. F. Balakirev, and N. Harrison. “Magnetic Field Tuning of an Excitonic Insulator
    between the Weak and Strong Coupling Regimes in Quantum Limit Graphite.” <i>Scientific
    Reports</i>. Springer Nature, 2017. <a href="https://doi.org/10.1038/s41598-017-01693-5">https://doi.org/10.1038/s41598-017-01693-5</a>.
  ieee: Z. Zhu <i>et al.</i>, “Magnetic field tuning of an excitonic insulator between
    the weak and strong coupling regimes in quantum limit graphite,” <i>Scientific
    Reports</i>, vol. 7. Springer Nature, 2017.
  ista: Zhu Z, McDonald RD, Shekhter A, Ramshaw BJ, Modic KA, Balakirev FF, Harrison
    N. 2017. Magnetic field tuning of an excitonic insulator between the weak and
    strong coupling regimes in quantum limit graphite. Scientific Reports. 7, 1733.
  mla: Zhu, Z., et al. “Magnetic Field Tuning of an Excitonic Insulator between the
    Weak and Strong Coupling Regimes in Quantum Limit Graphite.” <i>Scientific Reports</i>,
    vol. 7, 1733, Springer Nature, 2017, doi:<a href="https://doi.org/10.1038/s41598-017-01693-5">10.1038/s41598-017-01693-5</a>.
  short: Z. Zhu, R.D. McDonald, A. Shekhter, B.J. Ramshaw, K.A. Modic, F.F. Balakirev,
    N. Harrison, Scientific Reports 7 (2017).
date_created: 2019-11-19T13:17:46Z
date_published: 2017-05-04T00:00:00Z
date_updated: 2021-01-12T08:11:40Z
day: '04'
ddc:
- '530'
doi: 10.1038/s41598-017-01693-5
extern: '1'
file:
- access_level: open_access
  checksum: 801f80b04ecd1ead95c8ab9827cbe067
  content_type: application/pdf
  creator: dernst
  date_created: 2019-11-26T11:58:58Z
  date_updated: 2020-07-14T12:47:48Z
  file_id: '7111'
  file_name: 2017_ScientificReports_Zhu.pdf
  file_size: 1571567
  relation: main_file
file_date_updated: 2020-07-14T12:47:48Z
has_accepted_license: '1'
intvolume: '         7'
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
publication: Scientific Reports
publication_identifier:
  issn:
  - 2045-2322
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
status: public
title: Magnetic field tuning of an excitonic insulator between the weak and strong
  coupling regimes in quantum limit graphite
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 7
year: '2017'
...
