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Relation between spin current and spin torque in Rashba ferromagnets.

Peng Jiang1, Zhongshui Ma1,2

  • 1School of Physics, Peking University, Beijing 100871, People's Republic of China.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|September 29, 2021
PubMed
Summary
This summary is machine-generated.

This study explores spin current and torque relationships in 2D Rashba ferromagnets. Novel transport currents arise from spin-orbit coupling and magnetic texture interplay.

Keywords:
2D Rashba ferromagnetsspin caloritronicsspin currentspin torquespintronics

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Area of Science:

  • Condensed Matter Physics
  • Spintronics
  • Materials Science

Background:

  • Understanding spin current and torque dynamics is crucial for advanced spintronic devices.
  • Two-dimensional (2D) Rashba ferromagnets offer unique properties due to strong spin-orbit coupling.
  • Nonuniform magnetic textures introduce complexities in spin transport phenomena.

Purpose of the Study:

  • To establish a relationship between spin current and spin torque (spin-orbit and spin transfer torque).
  • To investigate electrically and thermally induced charge, heat, and spin currents in 2D Rashba ferromagnets.
  • To explore novel transport currents arising from the interplay of spin-orbit coupling and magnetic texture.

Main Methods:

  • Utilized Luttinger's mechanical method for investigating charge, heat, and spin currents.
  • Derived contributions of magnetization to thermal spin current and thermal spin torque.
  • Analyzed the effects of spin-orbit coupling and nonuniform magnetic texture.

Main Results:

  • Established a relationship between spin current and spin torque in 2D Rashba ferromagnets with nonuniform magnetic texture.
  • Quantified contributions of magnetization to thermal spin current and thermal spin torque.
  • Discovered novel transport currents resulting from the interplay between spin-orbit coupling and magnetic texture.

Conclusions:

  • The study provides fundamental insights into spin transport phenomena in 2D Rashba ferromagnets.
  • Findings are relevant for the design and optimization of next-generation spintronic devices.
  • The discovery of novel transport currents opens new avenues for research in spintronics.