arXivDaily arXiv每日学术速递 周一至周五更新
看起来今天可以划水了
arXiv 0705.3849cond-mat.mes-hall
收藏

Rashba和Dresselhaus自旋轨道耦合在二维电子系统光学自旋极化率中的相互作用

Interplay of the Rashba and Dresselhaus spin-orbit coupling in the optical spin susceptibility of 2D electron systems

Catalina López-Bastidas, Jesús A. Maytorena, Francisco Mireles

摘要:

本文计算了具有Rashba和Dresselhaus自旋轨道相互作用的二维电子气的自旋磁化率张量。结果表明,两种类型的自旋-轨道耦合之间的相互作用导致自旋密度响应函数的各向异性谱行为,这与Rashba或Dresselhaus消失的情况显着不同。强共振的自旋磁化率作为能量自旋分裂的角各向异性的结果。这种特性的光学调制响应可能是有用的实验探测自旋积累和自旋密度电流在这样的系统。

英文摘要:

We present calculations of the frequency-dependent spin susceptibility tensor of a two-dimensional electron gas with competing Rashba and Dresselhaus spin-orbit interaction. It is shown that the interplay between both types of spin-orbit coupling gives rise to an anisotropic spectral behavior of the spin density response function which is significantly different from that of vanishing Rashba or Dresselhaus case. Strong resonances are developed in the spin susceptibility as a consequence of the angular anisotropy of the energy spin-splitting. This characteristic optical modulable response may be useful to experimentally probe spin accumulation and spin density currents in such systems.

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。

↑