Eur. Phys. J. B 18, 149-157 (2000)
https://doi.org/10.1007/s100510070087

Spin accumulation in the semi classical and quantum regimes

¹ Centre de Recherches sur les très basses températures (CRTBT)U.P.R. 5001 du CNRS, Laboratoire conventionné avec l'Université Joseph Fourier CNRS, BP 166X, 38042 Grenoble Cedex, France
² Laboratoire de PhysiqueU.M.R. CNRS 5672, École Normale Supérieure de Lyon, 46 allée d'Italie, 69364 Lyon Cedex 07, France

Received: 21 April 2000
Revised: 12 July 2000
Published online: 15 November 2000

Abstract

We consider spin accumulation at a ferromagnet-normal metal interface in the presence of magnetic scattering in the normal metal. In the classical regime, we discuss the inverse Drude scaling of the conductance as a function of the interface transparencies. We present a treatment based on an exact solution of the Boltzmann equation. In the quantum regime, we solve a single impurity "spin-flip Fabry Perot interferometer" for quantum coherent multiple scatterings, in which we find a resonance in the spin flip channels. This resonance appears to be the quantum analog of the semi classical inverse Drude scaling of the conductance.