首页> 外文期刊>Physical review >Tracing the nonequilibrium topological state of Ghern insulators
【24h】

Tracing the nonequilibrium topological state of Ghern insulators

机译:追踪Ghern绝缘子的非平衡拓扑状态

获取原文
获取原文并翻译 | 示例
           

摘要

Chern insulators exhibit fascinating properties, which originate from the topologically nontrivial state characterized by the Chern number. How these properties change if the system is quenched between topologically distinct phases is, however, not fully understood. In this paper, we investigate the quench dynamics of the prototypical massive Dirac model for topological insulators in two dimensions. We consider both dissipationless dynamics and the effect of electron-phonon interactions, and ask how the transient dynamics and nonequilibrium steady states affect simple observables. Specifically, we discuss a time-dependent generalization of the Hall effect and the dichroism of the photoexcitation probability between left and right circularly polarized light. We present optimized schemes based on these observables, which can reveal the evolution of the topological state of the quenched system.
机译:Chern绝缘子表现出令人着迷的特性,该特性源自以Chern数为特征的拓扑非平凡状态。但是,如果系统在拓扑不同的相之间淬灭,这些特性将如何改变。在本文中,我们研究了二维拓扑拓扑绝缘子的典型质量Dirac模型的失超动力学。我们同时考虑了无耗散动力学和电子-声子相互作用的影响,并询问瞬态动力学和非平衡稳态如何影响简单的可观现象。具体而言,我们讨论了霍尔效应的时间相关泛化以及左右圆偏振光之间光激发概率的二向色性。我们基于这些可观察的数据提出了优化的方案,可以揭示淬火系统拓扑状态的演变。

著录项

  • 来源
    《Physical review》 |2017年第15期|155122.1-155122.13|共13页
  • 作者单位

    Department of Physics, University of Fribourg, 1700 Fribourg, Switzerland;

    Department of Physics, University of Fribourg, 1700 Fribourg, Switzerland;

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

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