Barth, Michael and Fuchs, Jacob and Kochan, Denis (2022) Spin relaxation, Josephson effect, and Yu-Shiba-Rusinov states in superconducting bilayer graphene. PHYSICAL REVIEW B, 105 (20): 205409. ISSN 2469-9950, 2469-9969
Full text not available from this repository. (Request a copy)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 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.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | BAND-STRUCTURE; JUNCTIONS; SPECTRUM; FIELD |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 07 Feb 2024 10:15 |
| Last Modified: | 07 Feb 2024 10:15 |
| URI: | https://pred.uni-regensburg.de/id/eprint/57187 |
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