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Oscillatory Exchange Coupling across Cr(1-x)Vx Alloy spacers

N. N. Lathiotakis, B. L. Gyorffy, E. Bruno, B. Ginatempo, S. S. P. Parkin

cond-mat.mtrl-sciarXiv:cond-mat/9908049

Abstract

We have identified the pieces of the Fermi surface responsible for the long period oscillations of magnetic coupling across Cr and Cr(1-x)Vx alloy spacers in metallic multilayers. Analysing experiments and results of KKR-CPA calculations we find that the periods are determined by the extremal wave~vectors of the hole pockets centered on the N-point in the Brillouin zone.

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