Spin-polarized electronic structures and transport properties of Fe-Co alloys

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The electrical resistivities of Fe-Co alloys owing to random alloy disorder are calculated using the Kubo-Greenwood formula. The obtained electrical esistivities agree well with experimental data quantitatively at low temperature. The spin-polarization of Fe50Co50 estimated from the conductivity (86%) has opposite sign to that from the densities of the states at the Fermi level (-73%). It is found that the conductivity is governed mainly by s-electrons, and the s-electrons in the minority spin states are less conductive due to strong scattering by the large densities of the states of d-electrons than the majority spin electrons.
3 pages, 4 figures

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Materials Science, Mesoscale and Nanoscale Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/224332

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0903.3842
 http://arxiv.org/abs/0903.3842
 J. Appl. Phys. 105, 07B716 (2009)
 doi:10.1063/1.3073955

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arXiv