...
首页> 外文期刊>Physical review >Proposal for a topological spin Chern pump
【24h】

Proposal for a topological spin Chern pump

机译:拓扑旋转Chern泵的建议

获取原文
获取原文并翻译 | 示例
           

摘要

A one-dimensional electron model with parameters modulated adiabatically in closed cycles is proposed which can continuously pump spin to leads. By defining the spin-polarized Wannier functions, we reveal that the spin pumping is protected by the spin Chern numbers, so that it is stable to perturbations violating the time-reversal symmetry and spin conservation. Our work demonstrates the principle for realizing robust topological spin pumps independent of the time-reversal symmetry. A possible way to directly observe the bulk topological invariants is also suggested.
机译:提出了一种在封闭循环中绝热调制参数的一维电子模型,该模型可以连续泵浦旋转至引线。通过定义自旋极化的Wannier函数,我们揭示了自旋泵浦受到自旋Chern数的保护,因此它对于扰动时间反转对称性和自旋守恒的扰动是稳定的。我们的工作演示了实现独立于时间反转对称性的强大拓扑自旋泵的原理。还建议了一种直接观察本体拓扑不变性的可能方法。

著录项

  • 来源
    《Physical review》 |2014年第8期|085133.1-085133.6|共6页
  • 作者单位

    National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;

    National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;

    National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;

    National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;

    Department of Physics and Astronomy, California State University, Northridge, California 91330, USA;

    National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;

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

    spin polarized transport; electronic transport in mesoscopic systems; quantum hall effects;

    机译:自旋极化传输;介观系统中的电子传输;量子霍尔效应;

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