...
首页> 外文期刊>Physical review >Weak localization in a lateral superlattice with Rashba and Dresselhaus spin-orbit interaction
【24h】

Weak localization in a lateral superlattice with Rashba and Dresselhaus spin-orbit interaction

机译:具有Rashba和Dresselhaus自旋轨道相互作用的横向超晶格中的弱定位

获取原文
获取原文并翻译 | 示例
           

摘要

We calculate the weak localization (WL) correction to the conductivity of a lateral superlattice (LSL) with Rashba (R)-Dresselhaus (D) spin-orbit interaction (SOI). The superlattice is modeled as a sequence of parallel wires that support tunneling between adjacent sites, leading to the formation of extended Bloch states along its axis and a miniband in the energy spectrum. Our results, obtained by calculating the eigenvalues of the Cooperon operator in the diffusion approximation, indicate that the electron dephasing rate that determines the antilocalization correction is enhanced by a term proportional with the LSL potential and the bandwidth. Within the same formalism, the spin-relaxation rates associated with the localization corrections are found to exhibit a strong anisotropy dictated by the relative strength of the two SOI couplings, as well as by the orientation of the LSL axis.
机译:我们计算与Rashba(R)-Dresselhaus(D)自旋轨道相互作用(SOI)的横向超晶格(LSL)的电导率的弱局部化(WL)校正。将超晶格建模为支持相邻站点之间隧穿的平行导线序列,从而导致沿其轴形成扩展的布洛赫状态以及能谱中的微带。通过在扩散近似中计算Cooperon算子的特征值获得的结果表明,确定反定位校正的电子移相速率与LSL电势和带宽成比例地增加了。在同一形式上,发现与定位校正相关的自旋松弛率表现出强烈的各向异性,这是由两个SOI耦合的相对强度以及LSL轴的方向决定的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号