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arXiv 0712.1277cond-mat.supr-con
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弹道异质结构中的自旋分辨交叉Andreev反射

Spin-resolved crossed Andreev reflection in ballistic heterostructures

Mikhail S. Kalenkov, Andrei D. Zaikin

摘要:

理论分析了具有自旋激活界面的三端弹道正常-超导-正常(NSN)结构中电子输运的非局域效应。从一个N金属进入S电极的亚隙电子可以与从另一个N金属穿透的它们的对应物形成库珀对。这种交叉Andreev反射的现象是高度敏感的电子自旋,并产生了丰富的各种性质的非本地电导,我们描述的非微扰在任意的接口传输,电压和温度。我们的研究结果可以应用于混合结构与正常,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:

We theoretically analyze non-local effects in electron transport across three-terminal ballistic normal-superconducting-normal (NSN) structures with spin-active interfaces. Subgap electrons entering S-electrode from one N-metal may form Cooper pairs with their counterparts penetrating from another N-metal. This phenomenon of crossed Andreev reflection is highly sensitive to electron spins and yields a rich variety of properties of non-local conductance which we describe non-perturbatively at arbitrary interface transmissions, voltages and temperatures. Our results can be applied to 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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