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arXiv 1601.07527cond-mat.mes-hall
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二维半导体中的自旋极化控制

Spin polarization control in a 2-dimensional semiconductor

Ian Appelbaum, Pengke Li

摘要:

长载流子自旋寿命对于构建“自旋电子”逻辑器件的前景是一把双刃剑:在传输通道或互连内保留逻辑变量对于成功完成逻辑操作是必不可少的,但是任何超过此事件的自旋都会污染后续时钟周期的环境。电场可用于通过自旋轨道效应的仔细相互作用在快速时间尺度上操纵这些自旋,但有效的受控去极化只能完全通过顺从的材料特性来实现。以III-VI族单硫属化合物单层膜为例的二维半导体,我们使用对称性分析,微扰理论和系综计算来展示如何通过适当的传导电子操作来解决这个长期存在的问题。

英文摘要:

Long carrier spin lifetimes are a double-edged sword for the prospect of constructing "spintronic" logic devices: Preservation of the logic variable within the transport channel or interconnect is essential to successful completion of the logic operation, but any spins remaining past this event will pollute the environment for subsequent clock cycles. Electric fields can be used to manipulate these spins on a fast timescale by careful interplay of spin-orbit effects, but efficient controlled depolarization can only be completely achieved with amenable materials properties. Taking III-VI monochalcogenide monolayers as an example 2D semiconductor, we use symmetry analysis, perturbation theory, and ensemble calculation to show how this longstanding problem can be solved by suitable manipulation of conduction electrons.

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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