Ballistic Josephson junctions in the presence of generic spin dependent fields

被引：17

作者：

Konschelle, Francois ^{[1
,2
]}

Tokatly, Ilya V. ^{[3
,4
]}

Bergeret, F. Sebastian ^{[1
,5
]}

机构：

[1] Ctr Mixto CSIC UPV EHU, Ctr Fis Mat CFM MPC, Manuel de Lardizabal 5, E-20018 San Sebastian, Spain

[2] Rhein Westfal TH Aachen, JARA Inst Quantum Informat, D-52074 Aachen, Germany

[3] Univ Basque Country, Dept Fis Mat, Nanobio Spect Grp, Av Tolosa 72, E-20018 San Sebastian, Spain

[4] Ikerbasque, Basque Fdn Sci, E-48011 Bilbao, Spain

[5] DIPC, Manuel de Lardizabal 4, E-20018 San Sebastian, Spain

来源：

PHYSICAL REVIEW B | 2016年 / 94卷 / 01期

关键词：

ANDREEV REFLECTION; CONDENSED MATTER; CIRCUIT-THEORY; SUPERCONDUCTOR; FERROMAGNET; TRANSPORT; SUPERCURRENTS; SPINTRONICS; INVARIANCE; EQUATIONS;

D O I：

10.1103/PhysRevB.94.014515

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ballistic Josephson junctions are studied in the presence of a spin-splitting field and spin-orbit coupling. A generic expression for the quasiclassical Green's function is obtained and with its help we analyze several aspects of the proximity effect between a spin-textured normal metal (N) and singlet superconductors (S). In particular, we show that the density of states may show a zero-energy peak which is a generic consequence of the spin dependent couplings in heterostructures. In addition, we also obtain the spin current and the induced magnetic moment in a SNS structure and discuss possible coherent manipulation of the magnetization which results from the coupling between the superconducting phase and the spin degree of freedom. Our theory predicts a spin accumulation at the S/N interfaces, and transverse spin currents flowing perpendicular to the junction interfaces. Some of these findings can be understood in the light of a non-Abelian electrostatics.

引用

页数：15