Perpendicular transport and magnetization processes in magnetic multilayers with strongly and weakly coupled magnetic layers

Details Perpendicular transport and magnetization processes in magnetic multilayers with strongly and weakly coupled magnetic layers Perpendicular transport and magnetization processes in magnetic multilayers with strongly and weakly coupled magnetic layers

1999-04-07

arxiv.org/abs/cond-mat/9904086v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

16 pages, 10 figures, submited to Journal of Magnetism and Magnetic Materials

Scientific paper

10.1016/S0304-8853(99)00372-8

Within the framework of a two-band tight-binding model, we have performed calculations of giant magnetoresistance, exchange coupling and thermoelectric power (TEP) for a system consisting of three magnetic layers separated by two non-magnetic spacers with the first two magnetic layers strongly antiferromagnetically exchange-coupled. We have shown how does the GMR relate with the corresponding regions of magnetic structure phase diagrams and computed some relevant hysteresis loops, too. The GMR may take negative values for specific layers thicknesses, and the TEP reveals quite pronounced oscillations around a negative bias.

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