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Anomalous Josephson Current through a Spin-Orbit Coupled Quantum Dot

被引：152
|
作者：
Zazunov, A. [1 ]
Egger, R. [1 ]
Jonckheere, T. [2 ]
Martin, T. [2 ,3 ]
机构：
[1] Univ Dusseldorf, Inst Theoret Phys, D-40225 Dusseldorf, Germany
[2] CNRS, Ctr Phys Theor, F-13288 Marseille, France
[3] Univ Mediterannee, F-13288 Marseille, France
来源：
PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 14期
关键词：
SUPERCONDUCTORS; SUPERCURRENT; JUNCTIONS;
D O I：
10.1103/PhysRevLett.103.147004
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
For a general model of a mesoscopic multilevel quantum dot, we determine the necessary conditions for the existence of an anomalous Josephson current with spontaneously broken time-reversal symmetry. They correspond to a finite spin-orbit coupling, a suitably oriented Zeeman field, and the dot being a chiral conductor. We provide analytical expressions for the anomalous supercurrent covering a wide parameter regime.
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页数：4
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