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arXiv 1004.0768cond-mat.mes-hall
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准一维通道中自旋共振弛豫的数值研究

Numerical study of resonant spin relaxation in quasi-1D channels

S. Luescher, S. M. Frolov, J. A. Folk

摘要:

最近的实验表明,弹道版本的自旋共振,介导的自旋轨道相互作用,可以诱导在窄通道的高迁移率GaAs二维电子气通过匹配的自旋进动频率与频率的弹跳轨迹在通道中。与在受限几何中Dyakonov-Perel自旋弛豫的典型抑制相反,自旋弛豫速率在共振时增加了几个数量级。在这里,我们提出了这种效果的蒙特卡罗模拟,探讨不同程度的无序和自旋轨道相互作用的强度的作用。这些模拟有助于从弹道自旋共振的实验测量中提取定量的自旋轨道参数,并可能指导未来自旋电子器件的发展。

英文摘要:

Recent experiments demonstrate that a ballistic version of spin resonance, mediated by spin-orbit interaction, can be induced in narrow channels of a high-mobility GaAs two-dimensional electron gas by matching the spin precession frequency with the frequency of bouncing trajectories in the channel. Contrary to the typical suppression of Dyakonov-Perel' spin relaxation in confined geometries, the spin relaxation rate increases by orders of magnitude on resonance. Here, we present Monte Carlo simulations of this effect to explore the roles of varying degrees of disorder and strength of spin-orbit interaction. These simulations help to extract quantitative spin-orbit parameters from experimental measurements of ballistic spin resonance, and may guide the development of future spintronic devices.

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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