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Spin Seebeck effect in Cu_2OSeO_3: Test of bulk magnon spin current theory

机译：Cu_2OSeO_3中的自旋塞贝克效应：体磁振子自旋电流理论的检验

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摘要

We report measurements of the low-temperature (T ≤ 15 K) longitudinal spin Seebeck coefficient (S_(LSSE)) in bulk single crystals of the helimagnetic insulator Cu_2OSeO_3 with Pt contacts. Simultaneous measurement of both S_(LSSE) and the magnon thermal conductivity (k_m) demonstrates their correlation and allows for quantitative and favorable comparison to bulk magnon spin current theory.
机译：我们报告了低温（T≤15 K）纵向自旋塞贝克系数（S_（LSSE））在具有Pt接触的螺旋磁绝缘子Cu_2OSeO_3的块状单晶中的测量结果。同时测量S_（LSSE）和磁振子热导率（k_m）证明了它们的相关性，并可以与体磁振子自旋电流理论进行定量和有利的比较。

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  • 来源
    《Physical review 》 |2020年第10期| 100407.1-100407.5| 共5页
  • 作者

    A. Akopyan; N. Prasai; B. A. Trump; G. G. Marcus; T. M. McQueen; J. L. Cohn;

  • 作者单位

    Department of Physics University of Miami Coral Gables Florida 33124 USA;

    Department of Physics University of Miami Coral Gables Florida 33124 USA Department of Physics St. Mary's College of Maryland St. Mary's City MD 20686;

    Department of Chemistry Johns Hopkins University Baltimore Maryland 21218 USA Department of Physics and Astronomy Institute for Quantum Matter Johns Hopkins University Baltimore Maryland 21218 USA NIST Center for Neutron Research National Institute of Standards and Technology Gaithersburg Maryland 20899-6102;

    Department of Physics and Astronomy Institute for Quantum Matter Johns Hopkins University Baltimore Maryland 21218 USA;

    Department of Chemistry Johns Hopkins University Baltimore Maryland 21218 USA Department of Physics and Astronomy Institute for Quantum Matter Johns Hopkins University Baltimore Maryland 21218 USA Department of Material Science and Engineering Johns Hopkins University Baltimore Maryland 21218 USA;

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