Issue
EPL
Volume 88, Number 4, November 2009
Article Number 47003
Number of page(s) 6
Section Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties
DOI http://dx.doi.org/10.1209/0295-5075/88/47003
Published online 25 November 2009
EPL, 88 (2009) 47003
DOI: 10.1209/0295-5075/88/47003

Spinor Boltzmann-Poisson equation and application to spin-dependent transport in magnetic multilayers

Li-Zhi Zhang, Zheng-Chuan Wang and Gang Su

College of Physical Sciences, Graduate University of Chinese Academy of Sciences P. O. Box 4588, Beijing 100049, China

wangzc@gucas.ac.cn

received 10 July 2009; accepted in final form 23 October 2009; published November 2009
published online 25 November 2009

Abstract
In order to consider the effect of electron-electron (e-e) interactions on the quantum transport in magnetic multilayers, the spinor Boltzmann equation and Poisson equation are jointly investigated. The analytical expressions of the spinor distribution function and the self-consistent average potential associated with e-e interactions are obtained, and the dielectric function in the self-consistent average potential is naturally generalized. Then we apply these results to the system of ferromagnet/insulator/dilute-magnetic-semiconductor (FM/I/DMS) layers, and study the time and position dependences of the charge current, spin current and spin accumulation in the FM/I/DMS system.

PACS
72.10.Bg - General formulation of transport theory.
72.25.Ba - Spin polarized transport in metals.
72.25.-b - Spin polarized transport.

© EPLA 2009