Spin-pumping in ferromagnet-normal metal systems

Arne Brataas, Yaroslav Tserkovnyak, Gerrit E.W. Bauer

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Mesoscopic ferromagnet (F)/normal metal (N) structures have recently attracted considerable attention. Slonczewski and Berger proposed that a spin-current may switch the magnetization orientation by means of a "spin-transfer" to the magnetization. We demonstrate that there is also a reverse mechanism: a moving magnetization vector loses angular momentum by emitting a spin-current. We outline the consequences of spin-pumping for (a) the Gilbert damping constant and (b) spin accumulation in adjacent normal metals and semiconductors, in F-N and F-N-F systems.

Original languageEnglish
Pages (from-to)1981-1982
Number of pages2
JournalJournal of Magnetism and Magnetic Materials
Volume272-276
Issue numberIII
DOIs
Publication statusPublished - 2004 May
Externally publishedYes

Keywords

  • Ferromagnetic resonance
  • Gilbert damping
  • Spin-valve

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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