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arXiv 0909.2762cond-mat.mes-hallcond-mat.str-el
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双量子点结构自旋电流的产生和探测

Spin current generation and detection by a double quantum dot structure

J. P. Dahlhaus, S. Maier, A. Komnik

摘要:

提出了一种基于双量子点结构的自旋阀器件。使用精确的解析解的非相互作用的情况下,我们认为,在一定的星座的系统参数和外部施加的领域,通过收缩的电流可以成为几乎完全自旋极化。我们讨论了耦合的不对称性,有限的温度和相互作用的设备的效率的影响,并作出预测的实验实现的效果。

英文摘要:

We propose a device acting as a spin valve which is based on a double quantum dot structure with parallel topology. Using the exact analytical solution for the noninteracting case we argue that, at a certain constellation of system parameters and externally applied fields, the electric current through the constriction can become almost fully spin-polarized. We discuss the influence of the coupling asymmetry, finite temperatures and interactions on the efficiency of the device and make predictions for the experimental realization of the effect.

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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