Spin dynamics from time-dependent spin density-functional theory
材料科学
2009-11-07 v1
摘要
We derive the spin-wave dynamics of a magnetic material from the time-dependent spin density functional theory in the linear response regime. The equation of motion for the magnetization includes, besides the static spin stiffness, a "Berry curvature" correction and a damping term. A gradient expansion scheme based on the homogeneous spin-polarized electron gas is proposed for the latter two quantities, and the first few coefficients of the expansion are calculated to second order in the Coulomb interaction.
引用
@article{arxiv.cond-mat/0108193,
title = {Spin dynamics from time-dependent spin density-functional theory},
author = {Zhixin Qian and Giovanni Vignale},
journal= {arXiv preprint arXiv:cond-mat/0108193},
year = {2009}
}
备注
8 pages, no figures