Oscillations in Magnetoresistance and Interlayer coupling in Magnetic Sandwich Structures |
| J. Barnaś Institute of Physics, A.M. University, Matejki 48/49, 60-769 Poznań, Poland and Laboratory of Solid State Physics and Magnetism, Catholic University of Leuven Celestijnenlaan 200 D, 3001 Leuven, Belgium and B. Bułka Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland |
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| Kubo formalism is used to calculate the magnetoresistance due to magnetization rotation in a structure consisting of two magnetic films separated by a nonmagnetic layer. In the approximation of a uniform relaxation time for each layer, the oscillatory term in magnetoresistance corresponds to the oscillation period which depends on the potential barriers at the interfaces. This period is longer than the oscillation period observed in the coupling parameter. |
| DOI: 10.12693/APhysPolA.91.253 PACS numbers: 72.15.Gd, 73.40.Jn |