Anomalous Josephson effect in p-wave dirty junctions.
Anomalous Josephson effect in p-wave dirty junctions.
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DOI：
10.1103/physrevlett.96.097007
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发表时间：
2006-03
影响因子：
8.6
通讯作者：
Y. Asano;Yukio Tanaka;S. Kashiwaya
中科院分区：
文献类型：
--
作者：
Y. Asano;Yukio Tanaka;S. Kashiwaya
从理论上研究了p波超导体/扩散正常金属/p波超导体结中的约瑟夫森效应。约瑟夫森电流的幅度比S波结中的大几个数量级。低温下的电流-相关系(J-Phi)接近于弹道结的J-Phi关系，如J与sin成正比(Phi/2)，J与Phi成正比，即使在随机杂质势存在的情况下也是如此。中隙Andreev共振态和邻近效应之间的协同效应导致了这种反常性质，这是自旋三重态超导结的一个特征。
The Josephson effect in p-wave superconductor/diffusive normal metal/p-wave superconductor junctions is studied theoretically. Amplitudes of Josephson currents are several orders of magnitude larger than those in s-wave junctions. Current-phase (J-phi) relations in low temperatures are close to those in ballistic junctions such as J proportional to sin(phi/2) and J proportional to phi even in the presence of random impurity potentials. A cooperative effect between the midgap Andreev resonant states and the proximity effect causes such anomalous properties and is a character of the spin-triplet superconductor junctions.