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arXiv 0901.4768cond-mat.supr-concond-mat.mes-hall
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高温超导体中的长程交叉Andreev反射

Long range crossed Andreev reflections in high Tc superconductors

William J. Herrera, A. Levy Yeyati, A. Martin-Rodero

摘要:

我们分析了d波超导体在纳米尺度上与金属电极耦合时的非局域输运性质。我们发现,非局域电导表现出代数衰减的距离,而不是在传统的超导体中发现的指数行为。与电子纠缠相关的交叉Andreev过程有利于超导体相对于引线的对称轴的某些取向。这些特性将允许使用现有技术进行实验检测。

英文摘要:

We analyze the non-local transport properties of a d-wave superconductor coupled to metallic electrodes at nanoscale distances. We show that the non-local conductance exhibits an algebraical decay with distance rather than the exponential behavior which is found in conventional superconductors. Crossed Andreev processes, associated with electronic entanglement, are favored for certain orientations of the symmetry axes of the superconductor with respect to the leads. These properties would allow its experimental detection using present technologies.

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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