TY - JOUR
T1 - Enhanced Gilbert Damping in Thin Ferromagnetic Films
AU - Tserkovnyak, Yaroslav
AU - Brataas, Arne
AU - Bauer, Gerrit E.W.
PY - 2002
Y1 - 2002
N2 - The precession of the magnetization of a ferromagnet is shown to transfer spins into adjacent normal metal layers. This “pumping” of spins slows down the precession corresponding to an enhanced Gilbert damping constant in the Landau-Lifshitz equation. The damping is expressed in terms of the scattering matrix of the ferromagnetic layer, which is accessible to model and first-principles calculations. Our estimates for permalloy thin films explain the trends observed in recent experiments.
AB - The precession of the magnetization of a ferromagnet is shown to transfer spins into adjacent normal metal layers. This “pumping” of spins slows down the precession corresponding to an enhanced Gilbert damping constant in the Landau-Lifshitz equation. The damping is expressed in terms of the scattering matrix of the ferromagnetic layer, which is accessible to model and first-principles calculations. Our estimates for permalloy thin films explain the trends observed in recent experiments.
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U2 - 10.1103/PhysRevLett.88.117601
DO - 10.1103/PhysRevLett.88.117601
M3 - Article
AN - SCOPUS:84871223181
SN - 0031-9007
VL - 88
SP - 4
JO - Physical Review Letters
JF - Physical Review Letters
IS - 11
ER -