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arXiv 1402.5590cond-mat.mes-hall
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量子环中的光诱导自旋极化

Light-induced spin polarizations in quantum rings

Fateme K. Joibari, Ya. M. Blanter, Gerrit E. W. Bauer

摘要:

非共振圆偏振电磁辐射可以通过逆法拉第效应(IFE)对磁化施加扭矩。在这里,我们讨论的增强IFE的自旋轨道相互作用(SOI)。我们通过研究一个简单的通用模型系统,即在线性/立方Rashba和Dresselhaus相互作用的存在下的准一维环来说明该原理。我们结合了经典的IFE在电子等离子体中,这是已知的,导致持续的电流在平面上垂直于光的传播方向的概念,电流和自旋轨道引起的自旋转移力矩。我们计算了光致自旋极化,在铁磁体可能会引起磁化翻转。

英文摘要:

Non-resonant circularly polarized electromagnetic radiation can exert torques on magnetization by the Inverse Faraday Effect (IFE). Here we discuss the enhancement of IFE by spin-orbit interactions (SOI). We illustrate the principle by studying a simple generic model system, i.e. the quasi-1D ring in the presence of linear/cubic Rashba and Dresselhaus interactions. We combine the classical IFE in electron plasmas that is known to cause persistent currents in the plane perpendicular to the direction of the propagation of light with the concept of current and spin-orbit-induced spin transfer torques. We calculate light-induced spin polarization that in ferromagnets might give rise to magnetization switching.

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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