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Magnetoanisotropic Josephson effect due to interfacial spin-orbit fields in superconductor/ferromagnet/superconductor junctions
Costa, Andreas
, Högl, Petra and Fabian, Jaroslav
(2017)
Magnetoanisotropic Josephson effect due to interfacial spin-orbit fields in superconductor/ferromagnet/superconductor junctions.
Physical Review B 95, 024514.
Date of publication of this fulltext: 02 Aug 2018 06:28
Article
DOI to cite this document: 10.5283/epub.37567
Abstract
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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| Item type | Article | ||||
| Journal or Publication Title | Physical Review B | ||||
| Publisher: | AMER PHYSICAL SOC | ||||
|---|---|---|---|---|---|
| Place of Publication: | COLLEGE PK | ||||
| Volume: | 95 | ||||
| Page Range: | 024514 | ||||
| Date | 26 January 2017 | ||||
| Institutions | Physics > Institute of Theroretical Physics Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian | ||||
| Identification Number |
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| Keywords | SUPERCONDUCTOR-FERROMAGNET STRUCTURES; ANDREEV REFLECTION; MAJORANA FERMIONS; SPINTRONICS; HETEROSTRUCTURES; NANOWIRE; SUPERCURRENTS; CIRCUITS; PHASE; | ||||
| Dewey Decimal Classification | 500 Science > 530 Physics | ||||
| Status | Published | ||||
| Refereed | Yes, this version has been refereed | ||||
| Created at the University of Regensburg | Yes | ||||
| URN of the UB Regensburg | urn:nbn:de:bvb:355-epub-375679 | ||||
| Item ID | 37567 |
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