Pure spin-current-induced magnetization switching

T. Yang, Takashi Kimura, J. B. Laloë, Y. Otani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

A spin current carries spin angular momentum in a spintronics device. Its interaction with a magnetic nanostructure not only gives rise to spin-dependent transport but also excites dynamics in the magnetic state. Unlike the spin-polarized electrical current, a pure spin current is useful for both fundamental and applied research because neither Oersted fields nor electrical current-related spurious effects are produced. Nonlocal electrical spin injection is a feasible way to produce the pure spin current. Here we demonstrate that the nonlocal spin valve signal is increased by an order of magnitude by improving the interface quality in a new device structure using a clean, in situ fabrication process. The generated pure spin current enables the magnetization reversal of a nanomagnet as efficiently as electrical current-induced magnetization switching. These results will open the door towards the realization of a pure-spin-current-driven device.

Original languageEnglish
Title of host publicationSpintronics
Volume7036
DOIs
Publication statusPublished - Nov 24 2008
Externally publishedYes
EventSpintronics - San Diego, CA, United States
Duration: Aug 10 2008Aug 14 2008

Other

OtherSpintronics
CountryUnited States
CitySan Diego, CA
Period8/10/088/14/08

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Yang, T., Kimura, T., Laloë, J. B., & Otani, Y. (2008). Pure spin-current-induced magnetization switching. In Spintronics (Vol. 7036). [70361B] https://doi.org/10.1117/12.793903