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Phys. Rev. B 62, 13899–13902 (2000)

Mesoscopic mechanism of exchange interaction in magnetic multilayers

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A. Zyuzin
Max-Planck-Institut fur Physik Komplexer Systeme, D-01187 Dresden, Germany
A. F. Ioffe Physical–Technical Institute, 194021, St. Petersburg, Russia

B. Spivak
Department of Physics, University of Washington, Seattle, Washington 98195
Max-Planck-Institut für Festkorperforschung Hochfeld-Magnetolabor, Grenoble, France

I. Vagner and P. Wyder
Max-Planck-Institut für Festkorperforschung Hochfeld-Magnetolabor, Grenoble, France

Received 27 September 1999; revised 24 January 2000; published in the issue dated 1 December 2000

We discuss a mesoscopic mechanism of exchange interaction in ferromagnet-nonferromagnet-ferromagnet metallic multilayers. We show that in the case when the thickness of the nonferromagnetic metal layer is larger than the electron mean free path, the relative orientation of magnetizations in the ferromagnets is perpendicular. The exchange energy between ferromagnets decays with the thickness of the nonferromagnetic metal layer as a power law.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.62.13899
DOI:
10.1103/PhysRevB.62.13899
PACS:
75.70.Cn, 05.20.-y, 82.20.-w
 
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