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arXiv · 1502.03599

Spin-current diode with a ferromagnetic semiconductor

Qing-Feng Sun·X. C. Xie
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Abstract

Diode is a key device in electronics: the charge current can flow through the device under a forward bias, while almost no current flows under a reverse bias. Here we propose a corresponding device in spintronics: the spin-current diode, in which the forward spin current is large but the reversed one is negligible. We show that the lead/ferromagnetic quantum dot/lead system and the lead/ferromagnetic semiconductor/lead junction can work as spin-current diodes. The spin-current diode, a low dissipation device, may have important applications in spintronics, as the conventional charge-current diode does in electronics.

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Qing-Feng Sun, X. C. Xie. 2015-02-12. Spin-current diode with a ferromagnetic semiconductor. https://doi.org/10.1063/1.4920988

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