Shadow Bands and Tunneling Magnetoresistance in Itinerant Electron Ferromagnets

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In itinerant electron ferromagnets spectral weight is transferred at finite temperatures from quasiparticle peaks located at majority and minority-spin band energies to shadow-band peaks. For a given Bloch wavevector and band index, the majority-spin shadow-band peak is located near the minority-spin quasiparticle energy and the minority-spin shadow-band peak is located near the majority-spin quasiparticle energy. This property can explain much of the temperature dependence seen in the magnetoresistance of magnetic tunnel junctions.
4 pages, 1 figure, submitted to Phys. Rev. Lett

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Condensed Matter

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http://salesiana.dossiersoluciones.com/handle/123456789/27997

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/9801023
 http://arxiv.org/abs/cond-mat/9801023

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arXiv