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Supercurrent dephasing by electron-electron interactions

delete2015-01-14
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A
Andrew G. Semenov *
A
Andrei D. Zaikin
DOI：10.1103/PhysRevB.91.024505delete
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摘要

摘要

En 中文
We demonstrate that in sufficiently long diffusive superconducting-normal-superconducting (SNS) junctions dc Josephson current is exponentially suppressed by electron-electron interactions down to zero temperature. This suppression is caused by the effect of Cooper pair dephasing which occurs in the normal metal and defines a new fundamental length scale L. in the problem. This length is fully consistent with that derived earlier from the analysis of dissipative electron transport across NS interfaces at subgap energies. Provided the temperature length exceeds L. this dephasing length can be conveniently extracted from equilibrium measurements of the Josephson current.
Keyword:
CURRENT-PHASE RELATION
NORMAL-METAL
QUANTUM DECOHERENCE
JOSEPHSON-JUNCTIONS
WEAK-LOCALIZATION
PROXIMITY
SUPERCONDUCTORS
FLUCTUATIONS
SYSTEMS
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对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。

期刊

Physical Review B 封面图
Physical Review B
IF:
3.7
论文数:
15.4W
被引数:
41.0W

机构

R
russian academy of sciences
学者数:
9.1W
论文数: 6.0W
被引数: 60
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