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Spin relaxation, Josephson effect and Yu-Shiba-Rusinov states in superconducting bilayer graphene
Barth, Michael
, Fuchs, Jacob
and Kochan, Denis
(2022)
Spin relaxation, Josephson effect and Yu-Shiba-Rusinov states in superconducting bilayer graphene.
Physical Review B 105 (20), p. 205409.
Date of publication of this fulltext: 16 May 2022 07:00
Article
DOI to cite this document: 10.5283/epub.52283
Abstract
Bilayer graphene has two nonequivalent sublattices and, therefore, the same adatom impurity can manifest in spectrally distinct ways???sharp versus broad resonances near the charge neutrality???depending on the sublattice it adsorbs at. Employing Green???s function analytical methods and the numerical KWANT package, we investigate the spectral and transport interplay between the resonances and ...
Bilayer graphene has two nonequivalent sublattices and, therefore, the same adatom impurity can manifest in spectrally distinct ways???sharp versus broad resonances near the charge neutrality???depending on the sublattice it adsorbs at. Employing Green???s function analytical methods and the numerical KWANT package, we investigate the spectral and transport interplay between the resonances and superconducting coherence induced in bilayer graphene by proximity to an s-wave superconductor. Analyzing doping and temperature dependencies of quasiparticle spin-relaxation rates, energies of Yu-Shiba-Rusinov states, Andreev spectra, and the supercurrent characteristics of Josephson junctions, we find unique superconducting signatures discriminating between resonant and off-resonant regimes. Our findings are in certain aspects going beyond the superconducting bilayer graphene and hold for generic s-wave superconductors functionalized by the resonant magnetic impurities.
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| Item type | Article | ||||||
| Journal or Publication Title | Physical Review B | ||||||
| Publisher: | AMER PHYSICAL SOC | ||||||
|---|---|---|---|---|---|---|---|
| Open Access Type: | Due to SHERPA/RoMEO | ||||||
| Place of Publication: | COLLEGE PK | ||||||
| Volume: | 105 | ||||||
| Number of Issue or Book Chapter: | 20 | ||||||
| Page Range: | p. 205409 | ||||||
| Date | 5 May 2022 | ||||||
| Institutions | Physics > Institute of Theroretical Physics Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter | ||||||
| Identification Number |
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| Keywords | BAND-STRUCTURE; JUNCTIONS; SPECTRUM; FIELD | ||||||
| Dewey Decimal Classification | 500 Science > 530 Physics | ||||||
| Status | Published | ||||||
| Refereed | Yes, this version has been refereed | ||||||
| Created at the University of Regensburg | Partially | ||||||
| URN of the UB Regensburg | urn:nbn:de:bvb:355-epub-522831 | ||||||
| Item ID | 52283 |
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