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Effect of Stern-Gerlach force on negative magnetoresistance and Hall resistance in spin-dependent viscous flow

机译:斯特恩 - 长拉伸力对旋转粘液粘液流动负磁阻和霍尔抗性的影响

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摘要

In two-dimensional eleetron systems (2DES). a hydrodynamie regime with remarkable viscous effects is recognized when the sample width is small enough and momentum-conserving scattering is dominant. Based on hydrodynamie calculations for a 2DES. we obtain large effective viscosity coefficients, which lead to large negative magnetoresistanee (MR) and Hall resistance due to the effect of an in-plane Stern-Gerlach force on the viscosity components. The spin-dependent viscous effect manifests itself via both longitudinal and Hall resistances. The negative MR and Hall resistance are markedly sensitive to the perpendicular magnetic field with amplitude around zero, which would be useful in MR sensors and magnetic recording devices.
机译:在二维ELEETRON系统(2DES)中。当样品宽度足够小而动力节约散射时,识别出具有显着粘性效果的水动力制度。基于2DES的水动力学计算。我们获得了大的有效粘度系数,这导致大的负磁阻(MR)和霍尔电阻导致由于在面内斯切尔拉赫力对粘度成分的影响。旋转依赖性粘性效果通过纵向和霍尔抗性表现出来。负MR和霍尔电阻对垂直磁场具有明显敏感,幅度约为零,其在MR传感器和磁记录装置中是有用的。

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  • 来源
    《Physical review》 |2020年第4期|045133.1-045133.6|共6页
  • 作者

    Ya Zhang; Feng Zhai; Wei Jiang;

  • 作者单位

    Department of Physics Wuhan University of Technology Wuhan 430070 China;

    Department of Physics Zhejiang Normal University Zhejiang 321004 China;

    School of Physics Huazhong University of Science and Technology Wuhan 430074 China;

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  • 正文语种 eng
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