Journal article Thermal Properties of the Superconductor–Quantum Hall Interface
Lingfei Zhao (author) (Search by this author)
;
Trevyn F. Q. Larson (author) (Search by this author)
;
Zubair Iftikhar (author) (Search by this author)
;
John Chiles (author) (Search by this author)
;
Kenji Watanabe (author) (Search by this author)
ORCID https://orcid.org/0000-0003-3701-8119
National Institute for Materials Science
SAMURAI NIMS Researchers Directory SAMURAI
ORCID SAMURAI ;
Takashi Taniguchi (author) (Search by this author)
ORCID https://orcid.org/0000-0002-1467-3105
National Institute for Materials Science
SAMURAI NIMS Researchers Directory SAMURAI
ORCID SAMURAI ;
François Amet (author) (Search by this author)
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Gleb Finkelstein (author) (Search by this author)
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Citation
Lingfei Zhao, Trevyn F. Q. Larson, Zubair Iftikhar, John Chiles, Kenji Watanabe, Takashi Taniguchi, François Amet, Gleb Finkelstein. Thermal Properties of the Superconductor–Quantum Hall Interface. Physical Review Letters. 2025, 134 (6), 066001. https://doi.org/10.1103/PhysRevLett.134.066001

Description:

(abstract)

An important route of engineering topological states and excitations is to combine superconductors (SC) with the quantum Hall (QH) effect, and over the past decade, significant progress has been made in this direction. While typical measurements of these states focus on electronic properties, little attention has been paid to the accompanying thermal responses. Here, we examine the thermal properties of the interface between type-II superconducting electrodes and graphene in the QH regime. We use the thermal noise measurement to probe the local electron temperature of the superconductor next to the biased interface. Surprisingly, the measured temperature rise indicates that the superconductor provides a significant thermal conductivity, which is linear in temperature. This suggests electronic heat transport and may be unexpected, because the number of the quasiparticles in the superconductor should be exponentially suppressed. Instead, we attribute the measured electronic heat conductivity to the overlap of the normal states in the vortex cores.

Rights:

Keyword: Quantum Hall effect, Superconductor-graphene interface, Thermal conductivity

Date published: 2025-02-12

Publisher: American Physical Society (APS)

Journal:

  • Physical Review Letters (ISSN: 10797114) vol. 134 issue. 6 066001

Funding:

  • Division of Materials Sciences and Engineering
  • U.S. Department of Energy DE-SC0002765
  • Ministry of Education, Culture, Sports, Science and Technology JPMXP0112101001
  • Japan Society for the Promotion of Science JP20H00354
  • Core Research for Evolutional Science and Technology JPMJCR15F3
  • Japan Science and Technology Agency

Manuscript type: Author's version (Accepted manuscript)

MDR DOI:

First published URL: https://doi.org/10.1103/PhysRevLett.134.066001

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Updated at: 2026-07-06 11:07:25 +0900

Published on MDR: 2026-07-06 12:30:06 +0900

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