Inhomogeneous Gilbert damping from impurities and electron-electron interactions
Mesoscale and Nanoscale Physics
2009-11-13 v2 Materials Science
Abstract
We present a unified theory of magnetic damping in itinerant electron ferromagnets at order including electron-electron interactions and disorder scattering. We show that the Gilbert damping coefficient can be expressed in terms of the spin conductivity, leading to a Matthiessen-type formula in which disorder and interaction contributions are additive. In a weak ferromagnet regime, electron-electron interactions lead to a strong enhancement of the Gilbert damping.
Cite
@article{arxiv.0804.0820,
title = {Inhomogeneous Gilbert damping from impurities and electron-electron interactions},
author = {E. M. Hankiewicz and G. Vignale and Y. Tserkovnyak},
journal= {arXiv preprint arXiv:0804.0820},
year = {2009}
}
Comments
5 pages, 1 figure