---
OA_place: repository
OA_type: green
_id: '19811'
abstract:
- lang: eng
text: We report on a combined study of the de Haas-van Alphen effect and angle-resolved
photoemission spectroscopy on single crystals of the metallic delafossite rounded
off by ab initio band structure calculations. A high-sensitivity torque magnetometry
setup with superconducting quantum interference device readout and synchrotron-based
photoemission with a light spot size of enabled high-resolution data to be obtained
from samples as small as . The Fermi surface shape is nearly cylindrical with
a rounded hexagonal cross section enclosing a Luttinger volume of 1.00(1) electrons
per formula unit.
article_number: '075163'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: F.
full_name: Arnold, F.
last_name: Arnold
- first_name: M.
full_name: Naumann, M.
last_name: Naumann
- first_name: S.
full_name: Khim, S.
last_name: Khim
- first_name: H.
full_name: Rosner, H.
last_name: Rosner
- first_name: Veronika
full_name: Sunko, Veronika
id: 23cb1cf6-2c7a-11ef-91a4-f72fc19f20b3
last_name: Sunko
orcid: 0000-0003-2724-3523
- first_name: F.
full_name: Mazzola, F.
last_name: Mazzola
- first_name: P. D. C.
full_name: King, P. D. C.
last_name: King
- first_name: A. P.
full_name: Mackenzie, A. P.
last_name: Mackenzie
- first_name: E.
full_name: Hassinger, E.
last_name: Hassinger
citation:
ama: Arnold F, Naumann M, Khim S, et al. Quasi-two-dimensional Fermi surface topography
of the delafossite PdRhO2. Physical Review B. 2017;96(7). doi:10.1103/physrevb.96.075163
apa: Arnold, F., Naumann, M., Khim, S., Rosner, H., Sunko, V., Mazzola, F., … Hassinger,
E. (2017). Quasi-two-dimensional Fermi surface topography of the delafossite PdRhO2.
Physical Review B. American Physical Society. https://doi.org/10.1103/physrevb.96.075163
chicago: Arnold, F., M. Naumann, S. Khim, H. Rosner, Veronika Sunko, F. Mazzola,
P. D. C. King, A. P. Mackenzie, and E. Hassinger. “Quasi-Two-Dimensional Fermi
Surface Topography of the Delafossite PdRhO2.” Physical Review B. American
Physical Society, 2017. https://doi.org/10.1103/physrevb.96.075163.
ieee: F. Arnold et al., “Quasi-two-dimensional Fermi surface topography of
the delafossite PdRhO2,” Physical Review B, vol. 96, no. 7. American Physical
Society, 2017.
ista: Arnold F, Naumann M, Khim S, Rosner H, Sunko V, Mazzola F, King PDC, Mackenzie
AP, Hassinger E. 2017. Quasi-two-dimensional Fermi surface topography of the delafossite
PdRhO2. Physical Review B. 96(7), 075163.
mla: Arnold, F., et al. “Quasi-Two-Dimensional Fermi Surface Topography of the Delafossite
PdRhO2.” Physical Review B, vol. 96, no. 7, 075163, American Physical Society,
2017, doi:10.1103/physrevb.96.075163.
short: F. Arnold, M. Naumann, S. Khim, H. Rosner, V. Sunko, F. Mazzola, P.D.C. King,
A.P. Mackenzie, E. Hassinger, Physical Review B 96 (2017).
date_created: 2025-06-10T09:13:38Z
date_published: 2017-08-31T00:00:00Z
date_updated: 2025-06-10T11:59:05Z
day: '31'
doi: 10.1103/physrevb.96.075163
extern: '1'
external_id:
arxiv:
- '1706.08865'
intvolume: ' 96'
issue: '7'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.1706.08865
month: '08'
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: Quasi-two-dimensional Fermi surface topography of the delafossite PdRhO2
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 96
year: '2017'
...
---
_id: '834'
abstract:
- lang: eng
text: 'Thermal and many-body localized phases are separated by a dynamical phase
transition of a new kind. We analyze the distribution of off-diagonal matrix elements
of local operators across this transition in two different models of disordered
spin chains. We show that the behavior of matrix elements can be used to characterize
the breakdown of thermalization and to extract the many-body Thouless energy.
We find that upon increasing the disorder strength the system enters a critical
region around the many-body localization transition. The properties of the system
in this region are: (i) the Thouless energy becomes smaller than the level spacing,
(ii) the matrix elements show critical dependence on the energy difference, and
(iii) the matrix elements, viewed as amplitudes of a fictitious wave function,
exhibit strong multifractality. This critical region decreases with the system
size, which we interpret as evidence for a diverging correlation length at the
many-body localization transition. Our findings show that the correlation length
becomes larger than the accessible system sizes in a broad range of disorder strength
values and shed light on the critical behavior near the many-body localization
transition.'
acknowledgement: We acknowledge useful discussions with V. Kravtsov, T. Grover,
and R. Vasseur. M.S. was supported by Gordon and Betty Moore Foundation’s EPiQS
Initiative through Grant GBMF4307. M.S. and D.A. acknowledge hospitality of KITP, where parts of
this work were completed (supported in part by the National Science Foundation under
Grant No. NSF PHY11-25915)
article_number: '104201'
article_processing_charge: No
arxiv: 1
author:
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Papic
full_name: Zlatko, Papic
last_name: Zlatko
- first_name: Dmitry
full_name: Abanin, Dmitry
last_name: Abanin
citation:
ama: Serbyn M, Zlatko P, Abanin D. Thouless energy and multifractality across the
many-body localization transition. Physical Review B - Condensed Matter and
Materials Physics. 2017;96(10). doi:10.1103/PhysRevB.96.104201
apa: Serbyn, M., Zlatko, P., & Abanin, D. (2017). Thouless energy and multifractality
across the many-body localization transition. Physical Review B - Condensed
Matter and Materials Physics. American Physical Society. https://doi.org/10.1103/PhysRevB.96.104201
chicago: Serbyn, Maksym, Papic Zlatko, and Dmitry Abanin. “Thouless Energy and Multifractality
across the Many-Body Localization Transition.” Physical Review B - Condensed
Matter and Materials Physics. American Physical Society, 2017. https://doi.org/10.1103/PhysRevB.96.104201.
ieee: M. Serbyn, P. Zlatko, and D. Abanin, “Thouless energy and multifractality
across the many-body localization transition,” Physical Review B - Condensed
Matter and Materials Physics, vol. 96, no. 10. American Physical Society,
2017.
ista: Serbyn M, Zlatko P, Abanin D. 2017. Thouless energy and multifractality across
the many-body localization transition. Physical Review B - Condensed Matter and
Materials Physics. 96(10), 104201.
mla: Serbyn, Maksym, et al. “Thouless Energy and Multifractality across the Many-Body
Localization Transition.” Physical Review B - Condensed Matter and Materials
Physics, vol. 96, no. 10, 104201, American Physical Society, 2017, doi:10.1103/PhysRevB.96.104201.
short: M. Serbyn, P. Zlatko, D. Abanin, Physical Review B - Condensed Matter and
Materials Physics 96 (2017).
date_created: 2018-12-11T11:48:45Z
date_published: 2017-09-06T00:00:00Z
date_updated: 2025-06-04T09:55:57Z
day: '06'
department:
- _id: MaSe
doi: 10.1103/PhysRevB.96.104201
external_id:
arxiv:
- '1610.02389'
isi:
- '000409429300004'
intvolume: ' 96'
isi: 1
issue: '10'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1610.02389
month: '09'
oa: 1
oa_version: Submitted Version
publication: Physical Review B - Condensed Matter and Materials Physics
publication_identifier:
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
publist_id: '6814'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Thouless energy and multifractality across the many-body localization transition
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 96
year: '2017'
...
---
_id: '9065'
abstract:
- lang: eng
text: Magnetic anisotropy in strontium iridate (Sr2IrO4) is found to be large because
of the strong spin-orbit interactions. In our work, we studied the in-plane magnetic
anisotropy of Sr2IrO4 and traced the anisotropic exchange interactions between
the isospins in the crystal. The magnetic-field-dependent torque τ(H) showed a
prominent transition from the canted antiferromagnetic state to the weak ferromagnetic
(WFM) state. A comprehensive analysis was conducted to examine the isotropic and
anisotropic regimes and probe the easy magnetization axis along the a b plane.
The angle-dependent torque τ(θ) revealed a deviation from the sinusoidal behavior,
and small differences in hysteresis were observed around 0° and 90° in the low-magnetic-field
regime. This indicates that the orientation of the easy axis of the FM component
is along the b axis, where the antiferromagnetic to WFM spin-flop transition occurs.
We compared the coefficients of the magnetic susceptibility tensors and captured
the anisotropy of the material. The in-plane τ(θ) revealed a tendency toward isotropic
behavior for fields with values above the field value of the WFM transition.
article_number: '155102'
article_processing_charge: No
article_type: original
author:
- first_name: Muhammad
full_name: Nauman, Muhammad
id: 32c21954-2022-11eb-9d5f-af9f93c24e71
last_name: Nauman
orcid: 0000-0002-2111-4846
- first_name: Yunjeong
full_name: Hong, Yunjeong
last_name: Hong
- first_name: Tayyaba
full_name: Hussain, Tayyaba
last_name: Hussain
- first_name: M. S.
full_name: Seo, M. S.
last_name: Seo
- first_name: S. Y.
full_name: Park, S. Y.
last_name: Park
- first_name: N.
full_name: Lee, N.
last_name: Lee
- first_name: Y. J.
full_name: Choi, Y. J.
last_name: Choi
- first_name: Woun
full_name: Kang, Woun
last_name: Kang
- first_name: Younjung
full_name: Jo, Younjung
last_name: Jo
citation:
ama: Nauman M, Hong Y, Hussain T, et al. In-plane magnetic anisotropy in strontium
iridate Sr2IrO4. Physical Review B. 2017;96(15). doi:10.1103/physrevb.96.155102
apa: Nauman, M., Hong, Y., Hussain, T., Seo, M. S., Park, S. Y., Lee, N., … Jo,
Y. (2017). In-plane magnetic anisotropy in strontium iridate Sr2IrO4. Physical
Review B. American Physical Society. https://doi.org/10.1103/physrevb.96.155102
chicago: Nauman, Muhammad, Yunjeong Hong, Tayyaba Hussain, M. S. Seo, S. Y. Park,
N. Lee, Y. J. Choi, Woun Kang, and Younjung Jo. “In-Plane Magnetic Anisotropy
in Strontium Iridate Sr2IrO4.” Physical Review B. American Physical Society,
2017. https://doi.org/10.1103/physrevb.96.155102.
ieee: M. Nauman et al., “In-plane magnetic anisotropy in strontium iridate
Sr2IrO4,” Physical Review B, vol. 96, no. 15. American Physical Society,
2017.
ista: Nauman M, Hong Y, Hussain T, Seo MS, Park SY, Lee N, Choi YJ, Kang W, Jo Y.
2017. In-plane magnetic anisotropy in strontium iridate Sr2IrO4. Physical Review
B. 96(15), 155102.
mla: Nauman, Muhammad, et al. “In-Plane Magnetic Anisotropy in Strontium Iridate
Sr2IrO4.” Physical Review B, vol. 96, no. 15, 155102, American Physical
Society, 2017, doi:10.1103/physrevb.96.155102.
short: M. Nauman, Y. Hong, T. Hussain, M.S. Seo, S.Y. Park, N. Lee, Y.J. Choi, W.
Kang, Y. Jo, Physical Review B 96 (2017).
date_created: 2021-02-02T15:49:21Z
date_published: 2017-10-01T00:00:00Z
date_updated: 2021-02-03T12:53:00Z
day: '01'
doi: 10.1103/physrevb.96.155102
extern: '1'
intvolume: ' 96'
issue: '15'
language:
- iso: eng
month: '10'
oa_version: None
publication: Physical Review B
publication_identifier:
issn:
- 2469-9950
- 2469-9969
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: In-plane magnetic anisotropy in strontium iridate Sr2IrO4
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 96
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. Physical Review B. 2017;95(12).
doi:10.1103/physrevb.95.121106
apa: Shekhter, A., Modic, K. A., McDonald, R. D., & Ramshaw, B. J. (2017). Thermodynamic
constraints on the amplitude of quantum oscillations. Physical Review B.
APS. https://doi.org/10.1103/physrevb.95.121106
chicago: Shekhter, Arkady, Kimberly A Modic, R. D. McDonald, and B. J. Ramshaw.
“Thermodynamic Constraints on the Amplitude of Quantum Oscillations.” Physical
Review B. APS, 2017. https://doi.org/10.1103/physrevb.95.121106.
ieee: A. Shekhter, K. A. Modic, R. D. McDonald, and B. J. Ramshaw, “Thermodynamic
constraints on the amplitude of quantum oscillations,” Physical Review B,
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.” Physical Review B, vol. 95, no. 12, 121106, APS, 2017, doi:10.1103/physrevb.95.121106.
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: '724'
abstract:
- lang: eng
text: We investigate the stationary and dynamical behavior of an Anderson localized
chain coupled to a single central bound state. Although this coupling partially
dilutes the Anderson localized peaks towards nearly resonant sites, the most weight
of the original peaks remains unchanged. This leads to multifractal wave functions
with a frozen spectrum of fractal dimensions, which is characteristic for localized
phases in models with power-law hopping. Using a perturbative approach we identify
two different dynamical regimes. At weak couplings to the central site, the transport
of particles and information is logarithmic in time, a feature usually attributed
to many-body localization. We connect such transport to the persistence of the
Poisson statistics of level spacings in parts of the spectrum. In contrast, at
stronger couplings the level repulsion is established in the entire spectrum,
the problem can be mapped to the Fano resonance, and the transport is ballistic.
acknowledgement: "We would like to thank Dmitry Abanin, Christophe De\r\nBeule,
\ Joel Moore, Romain Vasseur, and Norman Yao for\r\nmany stimulating discussions.
\ Financial support has been\r\nprovided by the Deutsche Forschungsgemeinschaft
\ (DFG)\r\nvia Grant No. TR950/8-1, SFB 1170 “ToCoTronics” and the\r\nENB Graduate
\ School on Topological Insulators. M.S. was\r\nsupported by Gordon and Betty
Moore Foundation’s EPiQS\r\nInitiative through Grant No. GBMF4307. F.P. acknowledges\r\nsupport
from the DFG Research Unit FOR 1807 through Grant\r\nNo. PO 1370/2-1."
article_number: '104203'
article_processing_charge: No
arxiv: 1
author:
- first_name: Daniel
full_name: Hetterich, Daniel
last_name: Hetterich
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Fernando
full_name: Domínguez, Fernando
last_name: Domínguez
- first_name: Frank
full_name: Pollmann, Frank
last_name: Pollmann
- first_name: Björn
full_name: Trauzettel, Björn
last_name: Trauzettel
citation:
ama: Hetterich D, Serbyn M, Domínguez F, Pollmann F, Trauzettel B. Noninteracting
central site model localization and logarithmic entanglement growth. Physical
Review B. 2017;96(10). doi:10.1103/PhysRevB.96.104203
apa: Hetterich, D., Serbyn, M., Domínguez, F., Pollmann, F., & Trauzettel, B.
(2017). Noninteracting central site model localization and logarithmic entanglement
growth. Physical Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.96.104203
chicago: Hetterich, Daniel, Maksym Serbyn, Fernando Domínguez, Frank Pollmann, and
Björn Trauzettel. “Noninteracting Central Site Model Localization and Logarithmic
Entanglement Growth.” Physical Review B. American Physical Society, 2017.
https://doi.org/10.1103/PhysRevB.96.104203.
ieee: D. Hetterich, M. Serbyn, F. Domínguez, F. Pollmann, and B. Trauzettel, “Noninteracting
central site model localization and logarithmic entanglement growth,” Physical
Review B, vol. 96, no. 10. American Physical Society, 2017.
ista: Hetterich D, Serbyn M, Domínguez F, Pollmann F, Trauzettel B. 2017. Noninteracting
central site model localization and logarithmic entanglement growth. Physical
Review B. 96(10), 104203.
mla: Hetterich, Daniel, et al. “Noninteracting Central Site Model Localization and
Logarithmic Entanglement Growth.” Physical Review B, vol. 96, no. 10, 104203,
American Physical Society, 2017, doi:10.1103/PhysRevB.96.104203.
short: D. Hetterich, M. Serbyn, F. Domínguez, F. Pollmann, B. Trauzettel, Physical
Review B 96 (2017).
date_created: 2018-12-11T11:48:09Z
date_published: 2017-09-13T00:00:00Z
date_updated: 2025-09-10T10:56:34Z
day: '13'
department:
- _id: MaSe
doi: 10.1103/PhysRevB.96.104203
external_id:
arxiv:
- '1701.02744'
isi:
- '000410590300001'
intvolume: ' 96'
isi: 1
issue: '10'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1701.02744
month: '09'
oa: 1
oa_version: Submitted Version
publication: Physical Review B
publication_identifier:
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
publist_id: '6955'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Noninteracting central site model localization and logarithmic entanglement
growth
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 96
year: '2017'
...
---
_id: '995'
abstract:
- lang: eng
text: Recently it was shown that an impurity exchanging orbital angular momentum
with a surrounding bath can be described in terms of the angulon quasiparticle
[Phys. Rev. Lett. 118, 095301 (2017)]. The angulon consists of a quantum rotor
dressed by a many-particle field of boson excitations, and can be formed out of,
for example, a molecule or a nonspherical atom in superfluid helium, or out of
an electron coupled to lattice phonons or a Bose condensate. Here we develop an
approach to the angulon based on the path-integral formalism, which sets the ground
for a systematic, perturbative treatment of the angulon problem. The resulting
perturbation series can be interpreted in terms of Feynman diagrams, from which,
in turn, one can derive a set of diagrammatic rules. These rules extend the machinery
of the graphical theory of angular momentum - well known from theoretical atomic
spectroscopy - to the case where an environment with an infinite number of degrees
of freedom is present. In particular, we show that each diagram can be interpreted
as a 'skeleton', which enforces angular momentum conservation, dressed by an additional
many-body contribution. This connection between the angulon theory and the graphical
theory of angular momentum is particularly important as it allows to systematically
and substantially simplify the analytical representation of each diagram. In order
to exemplify the technique, we calculate the 1- and 2-loop contributions to the
angulon self-energy, the spectral function, and the quasiparticle weight. The
diagrammatic theory we develop paves the way to investigate next-to-leading order
quantities in a more compact way compared to the variational approaches.
article_number: '085410'
article_processing_charge: No
arxiv: 1
author:
- first_name: Giacomo
full_name: Bighin, Giacomo
id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87
last_name: Bighin
orcid: 0000-0001-8823-9777
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: Bighin G, Lemeshko M. Diagrammatic approach to orbital quantum impurities interacting
with a many-particle environment. Physical Review B - Condensed Matter and
Materials Physics. 2017;96(8). doi:10.1103/PhysRevB.96.085410
apa: Bighin, G., & Lemeshko, M. (2017). Diagrammatic approach to orbital quantum
impurities interacting with a many-particle environment. Physical Review B
- Condensed Matter and Materials Physics. American Physical Society. https://doi.org/10.1103/PhysRevB.96.085410
chicago: Bighin, Giacomo, and Mikhail Lemeshko. “Diagrammatic Approach to Orbital
Quantum Impurities Interacting with a Many-Particle Environment.” Physical
Review B - Condensed Matter and Materials Physics. American Physical Society,
2017. https://doi.org/10.1103/PhysRevB.96.085410.
ieee: G. Bighin and M. Lemeshko, “Diagrammatic approach to orbital quantum impurities
interacting with a many-particle environment,” Physical Review B - Condensed
Matter and Materials Physics, vol. 96, no. 8. American Physical Society, 2017.
ista: Bighin G, Lemeshko M. 2017. Diagrammatic approach to orbital quantum impurities
interacting with a many-particle environment. Physical Review B - Condensed Matter
and Materials Physics. 96(8), 085410.
mla: Bighin, Giacomo, and Mikhail Lemeshko. “Diagrammatic Approach to Orbital Quantum
Impurities Interacting with a Many-Particle Environment.” Physical Review B
- Condensed Matter and Materials Physics, vol. 96, no. 8, 085410, American
Physical Society, 2017, doi:10.1103/PhysRevB.96.085410.
short: G. Bighin, M. Lemeshko, Physical Review B - Condensed Matter and Materials
Physics 96 (2017).
corr_author: '1'
date_created: 2018-12-11T11:49:36Z
date_published: 2017-08-07T00:00:00Z
date_updated: 2025-06-04T08:17:18Z
day: '07'
department:
- _id: MiLe
doi: 10.1103/PhysRevB.96.085410
external_id:
arxiv:
- '1704.02616'
isi:
- '000407017100009'
intvolume: ' 96'
isi: 1
issue: '8'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1704.02616
month: '08'
oa: 1
oa_version: Submitted Version
project:
- _id: 26031614-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P29902
name: Quantum rotations in the presence of a many-body environment
publication: Physical Review B - Condensed Matter and Materials Physics
publication_identifier:
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
publist_id: '6404'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Diagrammatic approach to orbital quantum impurities interacting with a many-particle
environment
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 96
year: '2017'
...
---
OA_place: repository
OA_type: green
_id: '986'
abstract:
- lang: eng
text: The many-body localization transition (MBLT) between ergodic and many-body
localized phases in disordered interacting systems is a subject of much recent
interest. The statistics of eigenenergies is known to be a powerful probe of crossovers
between ergodic and integrable systems in simpler examples of quantum chaos. We
consider the evolution of the spectral statistics across the MBLT, starting with
mapping to a Brownian motion process that analytically relates the spectral properties
to the statistics of matrix elements. We demonstrate that the flow from Wigner-Dyson
to Poisson statistics is a two-stage process. First, a fractal enhancement of
matrix elements upon approaching the MBLT from the delocalized side produces an
effective power-law interaction between energy levels, and leads to a plasma model
for level statistics. At the second stage, the gas of eigenvalues has local interactions
and the level statistics belongs to a semi-Poisson universality class. We verify
our findings numerically on the XXZ spin chain. We provide a microscopic understanding
of the level statistics across the MBLT and discuss implications for the transition
that are strong constraints on possible theories.
article_number: 041424(R)
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Joel
full_name: Moore, Joel
last_name: Moore
citation:
ama: Serbyn M, Moore J. Spectral statistics across the many-body localization transition.
Physical Review B - Condensed Matter and Materials Physics. 2016;93(4).
doi:10.1103/PhysRevB.93.041424
apa: Serbyn, M., & Moore, J. (2016). Spectral statistics across the many-body
localization transition. Physical Review B - Condensed Matter and Materials
Physics. American Physical Society. https://doi.org/10.1103/PhysRevB.93.041424
chicago: Serbyn, Maksym, and Joel Moore. “Spectral Statistics across the Many-Body
Localization Transition.” Physical Review B - Condensed Matter and Materials
Physics. American Physical Society, 2016. https://doi.org/10.1103/PhysRevB.93.041424.
ieee: M. Serbyn and J. Moore, “Spectral statistics across the many-body localization
transition,” Physical Review B - Condensed Matter and Materials Physics,
vol. 93, no. 4. American Physical Society, 2016.
ista: Serbyn M, Moore J. 2016. Spectral statistics across the many-body localization
transition. Physical Review B - Condensed Matter and Materials Physics. 93(4),
041424(R).
mla: Serbyn, Maksym, and Joel Moore. “Spectral Statistics across the Many-Body Localization
Transition.” Physical Review B - Condensed Matter and Materials Physics,
vol. 93, no. 4, 041424(R), American Physical Society, 2016, doi:10.1103/PhysRevB.93.041424.
short: M. Serbyn, J. Moore, Physical Review B - Condensed Matter and Materials Physics
93 (2016).
date_created: 2018-12-11T11:49:33Z
date_published: 2016-01-29T00:00:00Z
date_updated: 2026-05-20T13:36:19Z
day: '29'
doi: 10.1103/PhysRevB.93.041424
extern: '1'
external_id:
arxiv:
- '1508.07293'
intvolume: ' 93'
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.1508.07293'
month: '01'
oa: 1
oa_version: Preprint
publication: Physical Review B - Condensed Matter and Materials Physics
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
publist_id: '6416'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Spectral statistics across the many-body localization transition
type: journal_article
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 93
year: '2016'
...
---
OA_place: repository
OA_type: green
_id: '987'
abstract:
- lang: eng
text: In contrast to bulk FeSe, which exhibits nematic order and low temperature
superconductivity, highly doped FeSe reverses the situation, having high temperature
superconductivity appearing alongside a suppression of nematic order. To investigate
this phenomenon, we study a minimal electronic model of FeSe, with interactions
that enhance nematic fluctuations. This model is sign problem free, and is simulated
using determinant quantum Monte Carlo (DQMC). We developed a DQMC algorithm with
parallel tempering, which proves to be an efficient source of global updates and
allows us to access the region of strong interactions. Over a wide range of intermediate
couplings, we observe superconductivity with an extended s-wave order parameter,
along with enhanced, but short-ranged, q=(0,0) ferro-orbital (nematic) order.
These results are consistent with approximate weak-coupling treatments that predict
that nematic fluctuations lead to superconducting pairing. Surprisingly, in the
parameter range under study, we do not observe nematic long-range order. Instead,
at stronger coupling an unusual insulating phase with q=(π,π) antiferro-orbital
order appears, which is missed by weak-coupling approximations.
acknowledgement: We thank S. Gazit for numerous discussions. This research was supported
by the Gordon and Betty Moore Foundation EPiQS Initiative through Grant No. GBMF4307
(M.S.), the U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences under Grant No. DE-SC0014671 (R.T.S.), and a Simons Investigator grant
(A.V.).
article_number: '155127'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Philipp
full_name: Dumitrescu, Philipp
last_name: Dumitrescu
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Richard
full_name: Scalettar, Richard
last_name: Scalettar
- first_name: Ashvin
full_name: Vishwanath, Ashvin
last_name: Vishwanath
citation:
ama: 'Dumitrescu P, Serbyn M, Scalettar R, Vishwanath A. Superconductivity and nematic
fluctuations in a model of doped FeSe monolayers: Determinant quantum Monte Carlo
study. Physical Review B. 2016;94(15). doi:10.1103/PhysRevB.94.155127'
apa: 'Dumitrescu, P., Serbyn, M., Scalettar, R., & Vishwanath, A. (2016). Superconductivity
and nematic fluctuations in a model of doped FeSe monolayers: Determinant quantum
Monte Carlo study. Physical Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.94.155127'
chicago: 'Dumitrescu, Philipp, Maksym Serbyn, Richard Scalettar, and Ashvin Vishwanath.
“Superconductivity and Nematic Fluctuations in a Model of Doped FeSe Monolayers:
Determinant Quantum Monte Carlo Study.” Physical Review B. American Physical
Society, 2016. https://doi.org/10.1103/PhysRevB.94.155127.'
ieee: 'P. Dumitrescu, M. Serbyn, R. Scalettar, and A. Vishwanath, “Superconductivity
and nematic fluctuations in a model of doped FeSe monolayers: Determinant quantum
Monte Carlo study,” Physical Review B, vol. 94, no. 15. American Physical
Society, 2016.'
ista: 'Dumitrescu P, Serbyn M, Scalettar R, Vishwanath A. 2016. Superconductivity
and nematic fluctuations in a model of doped FeSe monolayers: Determinant quantum
Monte Carlo study. Physical Review B. 94(15), 155127.'
mla: 'Dumitrescu, Philipp, et al. “Superconductivity and Nematic Fluctuations in
a Model of Doped FeSe Monolayers: Determinant Quantum Monte Carlo Study.” Physical
Review B, vol. 94, no. 15, 155127, American Physical Society, 2016, doi:10.1103/PhysRevB.94.155127.'
short: P. Dumitrescu, M. Serbyn, R. Scalettar, A. Vishwanath, Physical Review B
94 (2016).
date_created: 2018-12-11T11:49:33Z
date_published: 2016-10-17T00:00:00Z
date_updated: 2026-05-20T13:49:33Z
day: '17'
doi: 10.1103/PhysRevB.94.155127
extern: '1'
external_id:
arxiv:
- '1512.08523'
intvolume: ' 94'
issue: '15'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.1512.08523'
month: '10'
oa: 1
oa_version: Preprint
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
publist_id: '6413'
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Superconductivity and nematic fluctuations in a model of doped FeSe monolayers:
Determinant quantum Monte Carlo study'
type: journal_article
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 94
year: '2016'
...