Effects of phase coherence on local density of states in superconducting proximity structures
Effects of phase coherence on local density of states in superconducting proximity structures
复制标题
相位相干性对超导邻近结构局部态密度的影响
DOI：
10.1103/physrevb.100.024511
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发表时间：
2019
影响因子：
3.7
通讯作者：
Tanaka Yukio
中科院分区：
文献类型：
--
作者：
Suzuki Shu-Ichiro;Golubov Alexander A.;Asano Yasuhiro;Tanaka Yukio
我们从理论上研究了两个超导终端连接在普通金属线的侧表面的超导邻近结构中态的局域密度。利用准经典格林函数方法，得到了自旋单重波结和自旋三重波结的能谱。在这两种情况下，零温度下邻近效应的衰减长度受到非弹性散射的依赖效应的限制。除了依赖效应之外，在波结中，衰减长度敏感地取决于结界面的透明度，这是奇宇称超导体的独特性质，其中发生异常接近效应。
We theoretically study the local density of states in superconducting proximity structures where two superconducting terminals are attached to a side surface of a normal-metal wire. Using the quasiclassical Green's function method, the energy spectrum is obtained for both spin-singlet-wave and spin-triplet-wave junctions. In both cases, the decay length of the proximity effect at zero temperature is limited by a depairing effect due to inelastic scattering. In addition to the depairing effect, in-wave junctions the decay length depends sensitively on the transparency at the junction interfaces, which is a unique property of odd-parity superconductors where the anomalous proximity effect occurs.