Complex impedance of a spin injecting junction

Rashba, Emmanuel

Citation

Rashba, Emmanuel I. 2002. “Complex Impedance of a Spin Injecting Junction.” Applied Physics Letters 80 (13): 2329. doi:10.1063/1.1465527.

Abstract

Theory of the ac spin injection from a ferromagneticelectrode into a normal conductor through a tunnel or Schottky contact is developed. Diffusion and relaxation of nonequilibrium spins results in a frequency-dependent complex impedance Z(ω)Z(ω) controlled by the spin relaxation rates and the resistances involved. Explicit expression for Z(ω)Z(ω) is presented. Experimental investigation of the frequency dependence of Z should allow measuringspin relaxation times in both conductors, their effective resistances, and also the parameters of the contact controlling the spin injection.

Other Sources

http://arxiv.org/pdf/cond-mat/0202222v1.pdf

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