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 language | English |
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Pages (from-to) | 1981-1982 |
Number of pages | 2 |
Journal | Journal of Magnetism and Magnetic Materials |
Volume | 272-276 |
Issue number | III |
DOIs | |
Publication status | Published - 2004 May |
Externally published | Yes |
Keywords
- Ferromagnetic resonance
- Gilbert damping
- Spin-valve
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics