Current-driven excitations in magnetic multilayers: a brief review
Preprint
- 20 October 2003
Abstract
In 1996, Berger and Slonczewski independently predicted that a large enough spin-polarized dc current density sent perpendicularly through a ferromagnetic layer could produce magnetic excitations (spin-waves) or reversal of magnetization (switching). In the past few years, both current-driven switching and current-driven excitation of spin-waves have been observed. The switching is of potential technological interest for direct 'writing' of magnetic random access memory (MRAM) or magnetic media. The spin-wave generation could provide a new source of dc generated microwave radiation. We describe what has been learned experimentally about these two related phenomena, and some models being tested to explain these observations.Keywords
All Related Versions
- Version 1, 2003-10-20, ArXiv
- Published version: Physica Status Solidi (a), 201 (7), 1379.
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