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Magnetoanisotropic Josephson effect due to interfacial spin-orbit fields in superconductor/ferromagnet/superconductor junctions
Costa, Andreas
, Högl, Petra und Fabian, Jaroslav
(2017)
Magnetoanisotropic Josephson effect due to interfacial spin-orbit fields in superconductor/ferromagnet/superconductor junctions.
Physical Review B 95, 024514.
Veröffentlichungsdatum dieses Volltextes: 02 Aug 2018 06:28
Artikel
DOI zum Zitieren dieses Dokuments: 10.5283/epub.37567
Zusammenfassung
We study theoretically the effects of interfacial Rashba and Dresselhaus spin-orbit coupling in superconductor/ ferromagnet/superconductor (S/F/S) Josephson junctions-with allowing for tunneling barriers between the ferromagnetic and superconducting layers-by solving the Bogoljubov-de Gennes equation for realistic heterostructures and applying the Furusaki-Tsukada technique to calculate the ...
We study theoretically the effects of interfacial Rashba and Dresselhaus spin-orbit coupling in superconductor/ ferromagnet/superconductor (S/F/S) Josephson junctions-with allowing for tunneling barriers between the ferromagnetic and superconducting layers-by solving the Bogoljubov-de Gennes equation for realistic heterostructures and applying the Furusaki-Tsukada technique to calculate the electric current at a finite temperature. The presence of spin-orbit couplings leads to out-of-plane and in-plane magnetoanisotropies of the Josephson current, which are giant in comparison to current magnetoanisotropies in similar normal-state ferromagnet/normal metal (F/N) junctions. Especially huge anisotropies appear in the vicinity of 0-pi transitions, caused by the exchange-split bands in the ferromagnetic metal layer. We also show that the direction of the Josephson critical current can be controlled (inducing 0-pi transitions) by the strength of the spin-orbit coupling and, more crucial, by the orientation of the magnetization. Such a control can bring new functionalities into Josephson junction devices.
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| Dokumentenart | Artikel | ||||
| Titel eines Journals oder einer Zeitschrift | Physical Review B | ||||
| Verlag: | AMER PHYSICAL SOC | ||||
|---|---|---|---|---|---|
| Ort der Veröffentlichung: | COLLEGE PK | ||||
| Band: | 95 | ||||
| Seitenbereich: | 024514 | ||||
| Datum | 26 Januar 2017 | ||||
| Institutionen | Physik > Institut für Theoretische Physik Physik > Institut für Theoretische Physik > Lehrstuhl Professor Richter > Arbeitsgruppe Jaroslav Fabian | ||||
| Identifikationsnummer |
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| Stichwörter / Keywords | SUPERCONDUCTOR-FERROMAGNET STRUCTURES; ANDREEV REFLECTION; MAJORANA FERMIONS; SPINTRONICS; HETEROSTRUCTURES; NANOWIRE; SUPERCURRENTS; CIRCUITS; PHASE; | ||||
| Dewey-Dezimal-Klassifikation | 500 Naturwissenschaften und Mathematik > 530 Physik | ||||
| Status | Veröffentlicht | ||||
| Begutachtet | Ja, diese Version wurde begutachtet | ||||
| An der Universität Regensburg entstanden | Ja | ||||
| URN der UB Regensburg | urn:nbn:de:bvb:355-epub-375679 | ||||
| Dokumenten-ID | 37567 |
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