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arXiv 0810.4843cond-mat.mes-hallcond-mat.supr-con
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超导邻近结构中的相敏电子-声子耦合

Phase sensitive electron-phonon coupling in a superconducting proximity structure

T. T. Heikkila, F. Giazotto

摘要:

本文研究了超导邻近效应对超导体(S)与扩散正常金属(N)间电子-声子能量交换的影响。邻近效应改变了正常金属的光谱响应,特别是局域态密度。这导致电子-声子能量弛豫的减弱。我们表明,该效果是很容易观察到的现代测温方法,并预测,它可以在连接到多个超导体的结构调整超导序参量之间的相位差在两个NS接口。

英文摘要:

We study the role of the superconducting proximity effect on the electron-phonon energy exchange in diffusive normal metals (N) attached to superconductors (S). The proximity effect modifies the spectral response of the normal metal, in particular the local density of states. This leads to a weakening of the electron-phonon energy relaxation. We show that the effect is easily observable with modern thermometry methods, and predict that it can be tuned in structures connected to multiple superconductors by adjusting the phase difference between superconducting order parameters at the two NS interfaces.

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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