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Spin-orbit torque-assisted switching in magnetic insulator thin films with perpendicular magnetic anisotropy.
Li, Peng; Liu, Tao; Chang, Houchen; Kalitsov, Alan; Zhang, Wei; Csaba, Gyorgy; Li, Wei; Richardson, Daniel; DeMann, August; Rimal, Gaurab; Dey, Himadri; Jiang, J S; Porod, Wolfgang; Field, Stuart B; Tang, Jinke; Marconi, Mario C; Hoffmann, Axel; Mryasov, Oleg; Wu, Mingzhong.
Afiliação
  • Li P; Department of Physics, Colorado State University, Fort Collins, Colorado 80523, USA.
  • Liu T; Department of Physics, Colorado State University, Fort Collins, Colorado 80523, USA.
  • Chang H; Department of Physics, Colorado State University, Fort Collins, Colorado 80523, USA.
  • Kalitsov A; MINT Center, University of Alabama, Tuscaloosa, Alabama 35401, USA.
  • Zhang W; Materials Science Division, Argonne National Laboratory, Lemont, Illinois, 60439, USA.
  • Csaba G; Department of Electrical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, USA.
  • Li W; Engineering Research Center for Extreme Ultraviolet Science and Technology and Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, Colorado 80523, USA.
  • Richardson D; Department of Physics, Colorado State University, Fort Collins, Colorado 80523, USA.
  • DeMann A; Department of Physics, Colorado State University, Fort Collins, Colorado 80523, USA.
  • Rimal G; Department of Physics &Astronomy, University of Wyoming, Laramie, Wyoming 82071, USA.
  • Dey H; Department of Electrical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, USA.
  • Jiang JS; Materials Science Division, Argonne National Laboratory, Lemont, Illinois, 60439, USA.
  • Porod W; Department of Electrical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, USA.
  • Field SB; Department of Physics, Colorado State University, Fort Collins, Colorado 80523, USA.
  • Tang J; Department of Physics &Astronomy, University of Wyoming, Laramie, Wyoming 82071, USA.
  • Marconi MC; Engineering Research Center for Extreme Ultraviolet Science and Technology and Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, Colorado 80523, USA.
  • Hoffmann A; Materials Science Division, Argonne National Laboratory, Lemont, Illinois, 60439, USA.
  • Mryasov O; MINT Center, University of Alabama, Tuscaloosa, Alabama 35401, USA.
  • Wu M; Department of Physics, Colorado State University, Fort Collins, Colorado 80523, USA.
Nat Commun ; 7: 12688, 2016 09 01.
Article em En | MEDLINE | ID: mdl-27581060
ABSTRACT
As an in-plane charge current flows in a heavy metal film with spin-orbit coupling, it produces a torque on and thereby switches the magnetization in a neighbouring ferromagnetic metal film. Such spin-orbit torque (SOT)-induced switching has been studied extensively in recent years and has shown higher efficiency than switching using conventional spin-transfer torque. Here we report the SOT-assisted switching in heavy metal/magnetic insulator systems. The experiments used a Pt/BaFe12O19 bilayer where the BaFe12O19 layer exhibits perpendicular magnetic anisotropy. As a charge current is passed through the Pt film, it produces a SOT that can control the up and down states of the remnant magnetization in the BaFe12O19 film when the film is magnetized by an in-plane magnetic field. It can reduce or increase the switching field of the BaFe12O19 film by as much as about 500 Oe when the film is switched with an out-of-plane field.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2016 Tipo de documento: Article
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2016 Tipo de documento: Article