Josephson current through charge density waves

被引：13
|
作者：
Visscher, MI
Rejaei, B
机构：
[1] Theoretical Physics Group, Department of Applied Physics/DIMES, Delft University of Technology, Delft, 2628 CJ
来源：
PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 22期
关键词：
D O I：
10.1103/PhysRevLett.79.4461
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The effect of the collective charge density wave (CDW) motion on the Josephson current in a superconductor/charge density wave/superconductor junction is studied theoretically. By deriving the kinetic equations for the coupled superconductor-CDW system, it is shown that below the critical current the CDW does not move. Biased above this value, the Josephson current oscillates as a function of the velocity of the sliding CDW and the collective mode acts as a nonlinear shunting resistor parallel to the Josephson channel. Internal mode locking of the Josephson and CDW frequencies causes oscillations in the current-voltage characteristics and plateaus in the CDW conductance.
引用
收藏
页码：4461 / 4464
页数：4
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