...
首页> 外文期刊>Physical review >Negative magnetoresistance suppressed through a topological phase transition in (Cd_(1-x)-Zn_x)_3As_2 thin films
【24h】

Negative magnetoresistance suppressed through a topological phase transition in (Cd_(1-x)-Zn_x)_3As_2 thin films

机译:(Cd_(1-x)-Zn_x)_3As_2薄膜中拓扑相变抑制的负磁阻

获取原文
获取原文并翻译 | 示例
           

摘要

The newly discovered topological Dirac semimetals host the possibilities of various topological phase transitions through the control of spin-orbit coupling as well as symmetries and dimensionalities. Here, we report a magnetotransport study of high-mobility (Cd_(1-x)Zn_x)_3As_2 films, where the topological Dirac semimetal phase can be turned into a trivial insulator via chemical substitution. By high-field measurements with a Hall-bar geometry, magnetoresistance components ascribed to the chiral charge pumping have been distinguished from other extrinsic effects. The negative magnetoresistance exhibits a clear suppression upon Zn doping, reflecting decreasing Berry curvature of the band structure as the topological phase transition is induced by reducing the spin-orbit
机译:新发现的狄拉克拓扑半金属具有通过自旋轨道耦合以及对称性和尺寸控制各种拓扑相变的可能性。在这里,我们报告了高迁移率(Cd_(1-x)Zn_x)_3As_2薄膜的磁传输研究,其中拓扑狄拉克半金属相可以通过化学取代转变为琐碎的绝缘体。通过具有霍尔杆几何形状的高场测量,归因于手性电荷泵的磁阻分量已与其他非本征效应区分开。负磁阻在Zn掺杂时表现出明显的抑制作用,反映出通过减小自旋轨道引起拓扑相变时带结构的Berry曲率降低

著录项

  • 来源
    《Physical review》 |2018年第24期|245103.1-245103.7|共7页
  • 作者单位

    Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan;

    Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan;

    Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan;

    Institute of Solid State Physics (ISSP), University of Tokyo, Chiba 277-0882, Japan;

    RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan;

    Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan;

    Institute of Solid State Physics (ISSP), University of Tokyo, Chiba 277-0882, Japan;

    RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan;

    Institute of Solid State Physics (ISSP), University of Tokyo, Chiba 277-0882, Japan;

    Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan,RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan;

  • 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