Current-driven magnetization reversal and spin-wave excitations in Co /Cu /Co pillars

  title={Current-driven magnetization reversal and spin-wave excitations in Co /Cu /Co pillars},
  author={Katine and Albert and Buhrman and Myers and Ralph},
  journal={Physical review letters},
  volume={84 14},
  • KatineAlbert Ralph
  • Published 16 August 1999
  • Physics
  • Physical review letters
Using thin film pillars approximately 100 nm in diameter, containing two Co layers of different thicknesses separated by a Cu spacer, we examine the process by which the scattering from the ferromagnetic layers of spin-polarized currents flowing perpendicular to the layers causes controlled reversal of the moment direction in the thin Co layer. The well-defined geometry permits a quantitative analysis of this spin-transfer effect, allowing tests of competing theories for the mechanism and also… 

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