Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1804099 | Journal of Magnetism and Magnetic Materials | 2008 | 11 Pages |
Abstract
We give a brief account of recent developments in the theoretical understanding of the interaction between electric currents and inhomogeneous ferromagnetic order parameters. We start by discussing the physical origin of the spin torques responsible for this interaction and construct a phenomenological description. We then consider the electric current-induced ferromagnetic instability and domain-wall motion. Finally, we present a microscopic justification of the phenomenological description of current-driven magnetization dynamics, with particular emphasis on the dissipative terms, the so-called Gilbert damping αα and the ββ component of the adiabatic current-driven torque.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Yaroslav Tserkovnyak, Arne Brataas, Gerrit E.W. Bauer,