Electrical detection of spin pumping due to the precessing magnetization of a single ferromagnet.

نویسندگان

  • M V Costache
  • M Sladkov
  • S M Watts
  • C H van der Wal
  • B J van Wees
چکیده

We report direct electrical detection of spin pumping, using a lateral normal-metal/ferromagnet/normal-metal device, where a single ferromagnet in ferromagnetic resonance pumps spin-polarized electrons into the normal metal, resulting in spin accumulation. The resulting backflow of spin current into the ferromagnet generates a dc voltage due to the spin-dependent conductivities of the ferromagnet. By comparing different contact materials (Al and/or Pt), we find, in agreement with theory, that the spin-related properties of the normal metal dictate the magnitude of the dc voltage.

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عنوان ژورنال:
  • Physical review letters

دوره 97 21  شماره 

صفحات  -

تاریخ انتشار 2006