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Theory of asymmetric and negative differential magnon tunneling under temperature bias: Towards a spin Seebeck diode and transistor

机译:温度偏置下的非对称负负磁控隧穿理论:自旋塞贝克二极管和晶体管

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摘要

We study the nonequilibrium transport for the asymmetric and negative differential magnon tunneling driven by temperature bias. We demonstrate that the many-body magnon interaction that makes the magnonic spectrum temperature-dependent is the crucial factor for the emergence of rectification and negative differential spin Seebeck effects in magnon tunneling junctions. When magnonic junctions have temperature-dependent density of states, reversing the temperature bias is able to give asymmetric spin currents and increasing temperature bias could give an anomalously decreasing magnonic spin current. We show that these properties are relevant for building spin Seebeck diodes and transistors, which could play important roles in controlling information and energy in magnonics and spin caloritronics.
机译:我们研究了由温度偏置驱动的非对称负负磁控隧穿的非平衡输运。我们证明,使马格尼克光谱与温度相关的多体磁振子相互作用是在磁振子隧道结中出现整流和负微分自旋塞贝克效应的关键因素。当强磁结具有与温度相关的状态密度时,反转温度偏置能够产生不对称的自旋电流,而增大温度偏置会异常地减小强磁自旋电流。我们证明了这些性质与建造自旋塞贝克二极管和晶体管有关,它们可以在控制磁控管和自旋热电子学中的信息和能量方面发挥重要作用。

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  • 来源
    《Physical review》 |2013年第9期|094427.1-094427.7|共7页
  • 作者

    Jie Ren; Jian-Xin Zhu;

  • 作者单位

    Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA;

    Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA,Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA;

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

    spin waves; spin transport through interfaces;

    机译:自旋波通过接口旋转传输;

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