...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physical review >Anomalous D'yakonov-Perel' spin relaxation in InAs (110) quantum wells under strong magnetic field: Role of Hartree-Fock self-energy
【24h】

Anomalous D'yakonov-Perel' spin relaxation in InAs (110) quantum wells under strong magnetic field: Role of Hartree-Fock self-energy

机译：强磁场下InAs（110）量子阱中的异常D'yakonov-Perel自旋弛豫：Hartree-Fock自能量的作用

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We investigate the influence of the Hartree-Fock self-energy, acting as an effective magnetic field, on the anomalous D'yakonov-Perel' spin relaxation in InAs (110) quantum wells when the magnetic field in the Voigt configuration is much stronger than the spin-orbit-coupled field. The transverse and longitudinal spin relaxations are discussed both analytically and numerically. For the transverse configuration, it is found that the spin relaxation is very sensitive to the Hartree-Fock effective magnetic field, which is very different from the conventional D'yakonov-Perel' spin relaxation. Even an extremely small spin polarization (P =0.1%) can significantly influence the behavior of the spin relaxation. It is further revealed that this comes from the unique form of the effective inhomogeneous broadening, originated from the mutually perpendicular spin-orbit-coupled field and strong magnetic field. It is shown that this effective inhomogeneous broadening is very small and hence very sensitive to the Hartree-Fock field. Moreover, we further find that in the spin polarization dependence, the transverse spin relaxation time decreases with the increase of the spin polarization in the intermediate spin polarization regime, which is also very different from the conventional situation, where the spin relaxation is always suppressed by the Hartree-Fock field. It is revealed that this opposite trend comes from the additional spin relaxation channel induced by the HF field. For the longitudinal configuration, we find that the spin relaxation can be either suppressed or enhanced by the Hartree-Fock field if the spin polarization is parallel or antiparallel to the magnetic field.
机译：我们研究了当有效磁场比Voigt结构强得多时，作为有效磁场的Hartree-Fock自能对InAs（110）量子阱中异常D'yakonov-Perel'自旋弛豫的影响自旋轨道耦合场。横向和纵向自旋弛豫都在分析和数值上进行了讨论。对于横向构型，发现自旋弛豫对Hartree-Fock有效磁场非常敏感，这与常规的D'yakonov-Perel'自旋弛豫非常不同。即使极小的自旋极化（P = 0.1％）也会显着影响自旋弛豫的行为。进一步揭示出，这是由于有效的非均匀展宽的独特形式而产生的，这种形式是由相互垂直的自旋轨道耦合场和强磁场引起的。结果表明，这种有效的非均匀展宽非常小，因此对Hartree-Fock场非常敏感。此外，我们进一步发现，在自旋极化相关性中，在自旋极化中间状态下，横向自旋弛豫时间随自旋极化的增加而减少，这也与传统情况大不相同，在传统情况下，自旋弛豫始终受到Hartree-Fock字段。结果表明，相反的趋势来自HF场引起的额外的自旋弛豫通道。对于纵向构型，我们发现，如果自旋极化平行于或反平行于磁场，则可通过Hartree-Fock场抑制或增强自旋弛豫。

著录项

  • 来源
    《Physical review》 |2014年第4期|045303.1-045303.9|共9页
  • 作者

    T. Yu; M. W. Wu;

  • 作者单位

    Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China;

    Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    spin relaxation and scattering; spin-orbit coupling, zeeman and stark splitting, jahn-teller effect; quantum wells;

    机译：自旋弛豫和散射;自旋轨道耦合;塞曼和斯塔克分裂;詹恩-泰勒效应;量子阱;

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