Complex impedance of a spin injecting junction
Mesoscale and Nanoscale Physics
2009-11-07 v1
Abstract
Theory of the ac spin injection from a ferromagnetic electrode into a normal conductor through a tunnel or Schottky contact is developed. Diffusion and relaxation of non-equilibrium spins results in a frequency dependent complex impedance controlled by the spin relaxation rates and the resistances involved. Explicit expression for the impedance is presented. Experimental investigation of the frequency dependence of the impedance should allow measuring spin relaxation times in both conductors, their effective resistances, and also the parameters of the contact controlling the spin injection.
Cite
@article{arxiv.cond-mat/0202222,
title = {Complex impedance of a spin injecting junction},
author = {Emmanuel I. Rashba},
journal= {arXiv preprint arXiv:cond-mat/0202222},
year = {2009}
}
Comments
3 pages, 2 column REVTeX, to appear in Appl. Phys. Lett