期刊
PHYSICAL REVIEW LETTERS
卷 101, 期 10, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.101.107005
关键词
-
资金
- French ANR project ELEC-EPR
We study the proximity effect between conventional superconductor and magnetic normal metal with a spin-orbit interaction of the Rashba type. Using the phenomenological Ginzburg-Landau theory and the quasiclassical Eilenberger approach it is demonstrated that the Josephson junction with such a metal as a weak link has a special nonsinusoidal current-phase relation. The ground state of this junction is characterized by the finite phase difference phi(0), which is proportional to the strength of the spin-orbit interaction and the exchange field in the normal metal. The proposed mechanism of the phi(0) junction formation gives a direct coupling between the superconducting current and the magnetic moment in the weak link. Therefore the phi(0) junctions open interesting perspectives for the superconducting spintronics.
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