Theoretical Study on Gilbert Damping of Nonuniform Magnetization Precession in Ferromagnetic Metals

We study Gilbert damping in bulk metallic ferromagnets containing magnetic and nonmagnetic impurities in the presence of nonuniform magnetization precession. In this model, a microscopic expression for the Gilbert damping tensor is obtained using the linear response theory with respect to the intera...

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Published in:Journal of the Physical Society of Japan 2012-11, Vol.81 (11), p.1-1
Main Authors: Umetsu, Nobuyuki, Miura, Daisuke, Sakuma, Akimasa
Format: Article
Language:English
Subjects:
Conductivity
Damping
Electromagnetics
Electrons
Ferromagnetism
Impurities
Magnetization
Mathematical analysis
Mathematical models
Microscopy
Nonuniform
Numerical analysis
Precession
Scattering
Tensors
Vector space
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creator Umetsu, Nobuyuki
Miura, Daisuke
Sakuma, Akimasa
description We study Gilbert damping in bulk metallic ferromagnets containing magnetic and nonmagnetic impurities in the presence of nonuniform magnetization precession. In this model, a microscopic expression for the Gilbert damping tensor is obtained using the linear response theory with respect to the interaction between magnetization and conduction electrons. We especially focus on a diagonal element of the tensor, which is a conventional Gilbert damping constant, and evaluate it numerically as a function of the wave vector q of magnetization precession. We show that the impurity scattering dominates Gilbert damping for 0
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source American Institute of Physics:Jisc Collections:Transitional Journals Agreement 2021-23 (Reading list)
subjects Conductivity
Damping
Electromagnetics
Electrons
Ferromagnetism
Impurities
Magnetization
Mathematical analysis
Mathematical models
Microscopy
Nonuniform
Numerical analysis
Precession
Scattering
Tensors
Vector space
title Theoretical Study on Gilbert Damping of Nonuniform Magnetization Precession in Ferromagnetic Metals
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