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періодичних видань НАН України
Effective magnetization damping for a dynamical spin texture in metallic ferromagnet
Репозиторій DSpace/Manakin
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Effective magnetization damping for a dynamical spin texture in metallic ferromagnet
Тема:
К 80-летию уравнения Ландау–Лифшица
Інший ID:
PACS: 76.60.Es, 76.20.+q, 75.75.–c, 75.78.–n
Посилання:
Effective magnetization damping for a dynamical spin texture in metallic ferromagnet / O.V. Sukhostavets, J.M. Gonzalez, K.Y. Guslienko // Физика низких температур. — 2015. — Т. 41, № 10. — С. 989–996. — Бібліогр.: 35 назв. — англ.
Підтримка:
K.G. acknowledges support by IKERBASQUE (the
Basque Foundation for Science). O.S. acknowledges financial
support by the University of the Basque Country,
UPV/EHU. This work was partially supported by the
Spanish Ministerio de Economia y Competitividad under
the grant MAT2013-47078-C2-1-P.
Дата:
2015
Переглядів:
772
Завантажень:
637
Анотація:
An additional magnetization damping for an inhomogeneous spin texture in metallic ferromagnets is calculated
on the basis of the s–d exchange model. The effect of conduction electrons on the magnetization dynamics is
accounted for the case of slowly varying spin texture within adiabatic approximation by using a coordinate transformation
to the local quantization axis. The moving magnetic vortex in a circular nanodot made of permalloy is
considered as an example. The dependence of the damping on the dot geometrical sizes is obtained. It is found
that the additional damping can reach up to 50% of magnitude of the phenomenological Gilbert damping in the
Landau–Lifshitz equation of magnetization motion and should be taken into account for any inhomogeneous
spin texture dynamics in ferromagnetic metals.
