Institut für Theoretische Physik, Heinrich-Heine-Universität, D-40225 Düsseldorf, Germany.
Phys Rev Lett. 2009 Oct 2;103(14):147004. doi: 10.1103/PhysRevLett.103.147004.
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.
对于介观多级量子点的一般模型，我们确定了具有自发破缺时间反转对称性的反常约瑟夫森电流存在的必要条件。它们对应于有限的自旋轨道耦合、适当取向的塞曼场以及点为手性导体。我们提供了广泛参数范围内反常超导电流的解析表达式。
