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Barth, Michael ; Fuchs, Jacob ; Kochan, Denis

Spin relaxation, Josephson effect and Yu-Shiba-Rusinov states in superconducting bilayer graphene

Artikel

Barth, Michael , Fuchs, Jacob und Kochan, Denis (2022) Spin relaxation, Josephson effect and Yu-Shiba-Rusinov states in superconducting bilayer graphene. Physical Review B 105 (20), S. 205409.

DOI zum Zitieren dieses Dokuments: 10.5283/epub.52283


Zusammenfassung

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.



Beteiligte Einrichtungen


Details

DokumentenartArtikel
Titel eines Journals oder einer ZeitschriftPhysical Review B
VerlagAMER PHYSICAL SOC
Open Access ArtSHERPA/RoMEO
Ort der VeröffentlichungCOLLEGE PK
Band105
Nummer des Zeitschriftenheftes oder des Kapitels20
SeitenbereichS. 205409
Datum5 Mai 2022
Veröffentlichungsdatum16 Mai 2022 07:00
InstitutionenPhysik > Institut für Theoretische Physik
Physik > Institut für Theoretische Physik > Lehrstuhl Professor Richter > Arbeitsgruppe Klaus Richter
Identifikationsnummer
WertTyp
10.1103/PhysRevB.105.205409DOI
2110.12998arXiv-ID
Stichwörter / KeywordsBAND-STRUCTURE; JUNCTIONS; SPECTRUM; FIELD
Dewey-Dezimal-Klassifikation500 Naturwissenschaften und Mathematik > 530 Physik
StatusVeröffentlicht
BegutachtetJa, diese Version wurde begutachtet
An der Universität Regensburg entstandenZum Teil
URN der UB Regensburgurn:nbn:de:bvb:355-epub-522831
Dokumenten-ID52283

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