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arXiv 0706.3575cond-mat.supr-con
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自旋激活界面上的交叉Andreev反射

Crossed Andreev reflection at spin-active interfaces

Mikhail S. Kalenkov, Andrei D. Zaikin

摘要:

本文利用准经典Eilenberger形式,发展了一个具有自旋激活NS界面的三端弹道式正常-超导-正常(NSN)器件的非局域电子输运理论。交叉Andreev反射(CAR)现象在这种传输中起着关键作用。我们表明,CAR是高度敏感的电子自旋,并产生丰富的各种性质的非本地电导,我们描述非微扰在任意电压,温度,自旋相关的接口传输和它们的极化。我们的研究结果可以应用到多端混合结构与正常,铁磁和半金属电极,并可以直接在未来的实验中进行测试。

英文摘要:

With the aid of the quasiclassical Eilenberger formalism we develop a theory of non-local electron transport across three-terminal ballistic normal-superconducting-normal (NSN) devices with spin-active NS interfaces. The phenomenon of crossed Andreev reflection (CAR) is known to play the key role in such transport. We demonstrate that CAR is highly sensitive to electron spins and yields a rich variety of properties of non-local conductance which we describe non-perturbatively at arbitrary voltages, temperature, spin-dependent interface transmissions and their polarizations. Our results can be applied to multi-terminal hybrid structures with normal, ferromagnetic and half-metallic electrodes and can be directly tested in future experiments.

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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