---
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: 2026-05-11T06:35:59Z
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
  record:
  - id: '21845'
    relation: used_in_publication
    status: public
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'
...