Quantum charge diffusion in underdamped Josephson junctions and superconducting nanowires

被引：10
|
作者：
Zazunov, A. [1 ]
Didier, N. [1 ]
Hekking, F. W. J. [1 ]
机构：
[1] Univ Grenoble 1, CNRS, Lab Phys & Moldelisat Milieux Condenses, F-38042 Grenoble, France
来源：
EPL | 2008年 / 83卷 / 04期
关键词：
D O I：
10.1209/0295-5075/83/47012
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The effect of quantum fluctuations on the current-voltage characteristics of Josephson junctions and superconducting nanowires is studied in the underdamped limit. Quantum fluctuations induce transitions between a Coulomb blockade and a supercurrent branch, and can significantly modify the shape of current-voltage characteristics in the case of a highly resistive environment. Owing to the phase-charge duality, our results can be directly extended to the opposite overdamped limit. Copyright (C) EPLA, 2008.
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页数：6
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