Effect of electron interactions on the conductivity and exchange coupling energy of disordered metallic magnetic multilayerV. A. Zyuzin1, 2 and A. Yu. Zyuzin1
1 A.F. Ioffe Physical-Technical Institute - 194021 St. Petersburg, Russia
2 Department of Physics, University of Utah - Salt Lake City, UT 84112, USA
received 6 September 2007; accepted in final form 21 November 2007; published February 2008
published online 19 December 2007
We consider the effect of electron-electron interactions on the current-in-plane (CIP) conductivity and exchange coupling energy of a disordered metallic magnetic multilayer. We analyze its dependence on the value of ferromagnetic splitting of conducting electrons and on ferromagnetic-layers relative magnetizations orientation. We show that the contribution to the CIP conductivity and exchange coupling energy as a periodic function of the angle of magnetizations relative orientation experience transition depending on the characteristic energies, i.e. ferromagnetic splitting of the conducting electrons and the Thouless energy of paramagnetic layer.
71.10.Ca - Electron gas, Fermi gas.
75.47.-m - Magnetotransport phenomena; materials for magnetotransport.
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