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Related Experiment Videos

Charge current driven by spin dynamics in disordered Rashba spin-orbit system.

Jun-Ichiro Ohe1, Akihito Takeuchi, Gen Tatara

  • 1I. Institut für Theoretische Physik, Universtität Hamburg, Jungiusstrasse 9, 20355 Hamburg, Germany.

Physical Review Letters
|February 1, 2008
PubMed
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Spin dynamics can generate electric current through the Rashba spin-orbit interaction. This charge current arises from spin current conversion via the inverse spin Hall effect and a fictitious field, applicable to moving domain walls.

Area of Science:

  • Condensed matter physics
  • Spintronics
  • Quantum mechanics

Background:

  • Spin dynamics play a crucial role in spintronics.
  • The Rashba spin-orbit interaction influences electron behavior in materials.
  • Understanding charge current generation from spin dynamics is key for device applications.

Purpose of the Study:

  • To theoretically investigate the pumping of charge current by spin dynamics.
  • To analyze the influence of the Rashba spin-orbit interaction on this process.
  • To explore the underlying mechanisms of current generation.

Main Methods:

  • Theoretical study of charge current generation.
  • Perturbative treatment of disordered electrons, exchange coupling, and spin-orbit interactions.

Related Experiment Videos

  • Application of findings to a moving domain wall scenario.

    • Main Results:

    • Dominant charge current is generated via spin current conversion through the inverse spin Hall effect.
    • An additional current component arises from a fictitious conservative field.
    • The theoretical framework is applied to understand current generation in moving domain walls.

    Conclusions:

    • Spin dynamics, coupled with Rashba spin-orbit interaction, can effectively pump charge current.
    • The inverse spin Hall effect is a primary mechanism for this conversion.
    • The findings provide insights into spintronic phenomena and potential device functionalities.