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28 February 2006 Anisotropic magneto-thermopower in 3d ferromagnets
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Abstract
Spin injection in metallic normal/ferromagnetic junctions is investigated taking into account the anisotropic magnetoresistance occurring in the ferromagnetic layer. On the basis of a generalized two-channel model, it is shown that there is an interface resistance contribution due to anisotropic scattering, besides spin accumulation and giant magnetoresistance. The corresponding expression of the thermoelectric power is derived and compared with the expression accounting for the thermoelectric power produced by the giant magnetoresistance. The results of this study show that, while the giant magnetoresistance and the corresponding thermoelectric power indicate the role of spin-flip scattering, the observed anisotropic magneto-thermoelectric power might be the fingerprint of interband s-d relaxation mechanisms.
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J.-E. Wegrowe and H.-J. Drouhin "Anisotropic magneto-thermopower in 3d ferromagnets", Proc. SPIE 6127, Quantum Sensing and Nanophotonic Devices III, 612711 (28 February 2006); https://doi.org/10.1117/12.660710
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