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Intrinsic nature of spontaneous magnetic fields in superconductors with time-reversal symmetry breaking [dataset] Open Access

We present a systematic investigation of muon-stopping states in superconductors that reportedly exhibit spontaneous magnetic fields below their transition temperatures due to time-reversal symmetry breaking. These materials include elemental rhenium, several intermetallic systems, and Sr 2 RuO 4 . We demonstrate that the presence of the muon leads to only a limited and relatively localized perturbation to the local crystal structure, while any small changes to the electronic structure occur several electron volts below the Fermi energy, leading to only minimal changes in the charge density on ions close to the muon. Our results imply that the muon-induced perturbation alone is unlikely to lead to the observed spontaneous fields in these materials, whose origin is more likely intrinsic to the time-reversal symmetry-broken superconducting state.

Descriptions

Resource type

Dataset

Contributors

Creator: Huddart, B. M. ¹
Onuorah, I. J. ²
Isah, M. M. ²
Bonfà, P. ²
Blundell, S. J. ³
Clark, S. J. ¹
De Renzi, R. ²
Creator: Lancaster, T. ¹

¹ Durham University, UK
² University of Parma, Italy
³ University of Oxford, UK

Funder

Engineering and Physical Sciences Research Council
CINECA
Supercomputing Unified Platform - Emilia-Romagna
Science and Technology Facilities Council

Research methods

Other description

Keyword

Muon spin relaxation & rotation
Density functional theory
Superconductivity
Unconventional superconductors

Subject

Location

Language

English

Cited in

doi:10.1103/PhysRevLett.127.237002

Identifier

ark:/32150/r2x059c7349
doi:10.15128/r2x059c7349

Rights

Creative Commons Attribution 4.0 International (CC BY)

Publisher

Durham University

Date Created

File Details

Depositor

B.M. Huddart

Date Uploaded

1 November 2021, 13:11:03

Date Modified

24 February 2022, 11:02:03

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Characterization

File format: zip (ZIP Format)

Mime type: application/zip

File size: 3843998

Last modified: 2022:02:23 15:11:21+00:00

Filename: NCS_data.zip

Original checksum: 148e6b7e661493da38a64a830dd61156