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Calculation of Spin-Dependent Interface Resistance

Published

Author(s)

Mark D. Stiles, David R. Penn

Abstract

A simple expression for the interface resistance between two materials has been derived by Schep et al. [J. Magn. Magn. Mater. 177, 1166 (1998).] in terms of the transmission probability for electrons at the interface. This approximation is tested for a simple model interface and good agreement is found with solutions of the Boltzmann equation. Previously calculated values of the transmission probability are used with this simple expression to evaluate the spin-dependent interface resistances of a number of ferromagnetic-normal metal interfaces. The agreement between the calculated results and the results extracted from experiments on Cu/Co argue that the interface resistance may not be dominated by defect scattering as is often assumed.
Citation
Physical Review B (Condensed Matter and Materials Physics)
Volume
61
Issue
5

Keywords

Boltzmann equation, electron transport, giant magnetoresistance, interface resistance, magnetic multilayers, reflection

Citation

Stiles, M. and Penn, D. (2000), Calculation of Spin-Dependent Interface Resistance, Physical Review B (Condensed Matter and Materials Physics) (Accessed April 15, 2024)
Created January 1, 2000, Updated June 2, 2021