TY - JOUR
T1 - Dynamic stiffness of spin valves
AU - Tserkovnyak, Yaroslav
AU - Brataas, Arne
AU - Bauer, Gerrit E.W.
PY - 2003/4/28
Y1 - 2003/4/28
N2 - The dynamics of the magnetic order parameters of ferromagnet/paramagnet/ferromagnet spin valves and isolated ferromagnets may be very different. We investigate the role of the nonequilibrium spin-current exchange between the ferromagnets in the magnetization precession and switching. We find a (low-temperature) critical current bias for a uniform current-induced magnetization excitation in spin valves, which unifies and generalizes previous ideas of Slonczewski and Berger. In the absence of an applied bias, the effect of the spin transfer can be expressed as magnetic-configuration-dependent Gilbert damping.
AB - The dynamics of the magnetic order parameters of ferromagnet/paramagnet/ferromagnet spin valves and isolated ferromagnets may be very different. We investigate the role of the nonequilibrium spin-current exchange between the ferromagnets in the magnetization precession and switching. We find a (low-temperature) critical current bias for a uniform current-induced magnetization excitation in spin valves, which unifies and generalizes previous ideas of Slonczewski and Berger. In the absence of an applied bias, the effect of the spin transfer can be expressed as magnetic-configuration-dependent Gilbert damping.
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U2 - 10.1103/PhysRevB.67.140404
DO - 10.1103/PhysRevB.67.140404
M3 - Article
AN - SCOPUS:0038441338
VL - 67
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 0163-1829
IS - 14
ER -