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CURRENT-CARRYING STATES IN JOSEPHSON-JUNCTIONS

被引：144
作者：
FURUSAKI, A
TSUKADA, M
机构：
[1] Department of Physics, University of Tokyo
来源：
PHYSICAL REVIEW B | 1991年 / 43卷 / 13期
关键词：
D O I：
10.1103/PhysRevB.43.10164
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A unified treatment of clean Josephson junctions - both tunnel junctions and weak links - is developed for the static case. The quasiparticle local density of states in Josephson junctions is calculated, and it is found that the energy spectrum depends strongly on the phase difference between the two superconductors. In the case of tunnel junctions, it is predicted that bound states which are localized around the tunnel barrier appear in the energy gap. The Josephson current flows via the bound states. The possibility to observe such current-carrying states by scanning tunneling spectroscopy is discussed.
引用
收藏
页码：10164 / 10169
页数：6
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