Spin currents, spin populations, and dielectric function
介观与纳米尺度物理
2007-05-23 v1
摘要
In Maxwellian electrodynamics, specific properties of the responses to external fields are included in constitutive equations. For noncentrosymmetric semiconductors, spin conductivity can be expressed in terms of the contribution of electric-dipole transitions between spin-split spectrum branches to the dielectric function. In a dissipationless regime, a spin current driven by an external electric field is tantamount to a background current in an equilibrium system with a reduced symmetry. The importance of transients and gradients for efficient spin-current injection is emphasized.
引用
@article{arxiv.cond-mat/0404723,
title = {Spin currents, spin populations, and dielectric function},
author = {Emmanuel I. Rashba},
journal= {arXiv preprint arXiv:cond-mat/0404723},
year = {2007}
}
备注
5 p