Journal
PHYSICS OF THE SOLID STATE
Volume 51, Issue 4, Pages 754-761Publisher
PLEIADES PUBLISHING INC
DOI: 10.1134/S1063783409040180
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Funding
- Department of Education of the Basque Government [9/UPV 00206.215-13639/2001]
- Spanish Ministry of Science and Technology [FIS2004-06490C03-01]
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This paper reports on the results of ab initio spin-polarized GW calculations of quasiparticle properties, such as the spectral weight, the lifetime, the velocity, and the mean free path, for the FeCo ferromagnetic alloy and its components. The contribution of the localized d states to the above characteristics has been analyzed. The spin asymmetry of the properties of quasiparticle excitations, which is responsible for the spin filter effect observed in experiments, has been investigated. The contributions to the mean free path from the electron scattering processes, which are disregarded within the framework of the GW approximation, have been estimated from a comparison with experimental data.
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