Spin torque and force due to current for general spin textures

Gen Tatara, Hiroshi Kohno, Junya Shibata, Yann Lemaho, Kyung Jin Lee

Research output: Contribution to journalArticle

71 Citations (Scopus)

Abstract

The nonadiabatic correction to spin transfer torque arising from fast-varying spin texture is calculated treating the conductions electron fully quantum mechanically. The torque is nonlocal in space, and is shown to be equivalent to a force (due to momentum transfer) acting on the center of mass of the texture. Another kind of force exists in the adiabatic regime, and it is identified to be of topological origin. These forces are shown to be the counter-reactions of electric transport properties, resistivity and the Hall effect.

Original languageEnglish
Article number054707
JournalJournal of the Physical Society of Japan
Volume76
Issue number5
DOIs
Publication statusPublished - 2007 May 1

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Keywords

  • Berry phase
  • Domain wall
  • MRAM
  • Magnetoresistance
  • Spin torque
  • Threshold current

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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