Shadow Bands and Tunneling Magnetoresistance in Itinerant Electron Ferromagnets
Condensed Matter
2007-05-23 v1
Abstract
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.
Keywords
Cite
@article{arxiv.cond-mat/9801023,
title = {Shadow Bands and Tunneling Magnetoresistance in Itinerant Electron Ferromagnets},
author = {A. H. MacDonald and T. Jungwirth and M. Kasner},
journal= {arXiv preprint arXiv:cond-mat/9801023},
year = {2007}
}
Comments
4 pages, 1 figure, submitted to Phys. Rev. Lett