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arXiv 0710.5546cond-mat.supr-concond-mat.str-el
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位相涨落超导体中的巨邻近效应

Giant proximity effect in a phase-fluctuating superconductor

D. Marchand, L. Covaci, M. Berciu, M. Franz

摘要:

当两个超导体之间的隧穿势垒由一种在没有相位波动的情况下会是超导体的正常材料形成时,所产生的约瑟夫森效应可以经历巨大的增强。我们建立了这种新的邻近效应的一般参数,以及数值模拟,并认为它可能是最近的实验观察的巨大的邻近效应之间的两个铜氧化物超导体分离的障碍由相同的材料呈现正常的严重欠掺杂。

英文摘要:

When a tunneling barrier between two superconductors is formed by a normal material that would be a superconductor in the absence of phase fluctuations, the resulting Josephson effect can undergo an enormous enhancement. We establish this novel proximity effect by a general argument as well as a numerical simulation and argue that it may underlie recent experimental observations of the giant proximity effect between two cuprate superconductors separated by a barrier made of the same material rendered normal by severe underdoping.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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