Localization and delocalization in dirty superconducting wires

被引:81
作者
Brouwer, PW [1 ]
Furusaki, A
Gruzberg, IA
Mudry, C
机构
[1] Cornell Univ, Atom & Solid State Phys Lab, Ithaca, NY 14853 USA
[2] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan
[3] Univ Calif Santa Barbara, Inst Theoret Phys, Santa Barbara, CA 93106 USA
[4] Paul Scherrer Inst, CH-5232 Villigen, Switzerland
基金
美国国家科学基金会;
关键词
D O I
10.1103/PhysRevLett.85.1064
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We present Fokker-Planck equations that describe transport of heat and spin in dirty unconventional superconducting quantum wires. Four symmetry classes are distinguished, depending on the presence or absence of time-reversal and spin-rotation invariance. In the absence of spin-rotation symmetry, heat transport is anomalous in that the mean conductance decays like 1/root L instead of exponentially fast for large enough length L of the wire. The Fokker-Planck equations in the presence of time-reversal symmetry are solved exactly and the mean conductance for quasiparticle transport is calculated for the crossover from the diffusive to the localized regime.
引用
收藏
页码:1064 / 1067
页数:4
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