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

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

2009-03-23

arxiv.org/abs/0903.3842v1

J. Appl. Phys. 105, 07B716 (2009)

Physics

Condensed Matter

Materials Science

3 pages, 4 figures

Scientific paper

10.1063/1.3073955

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.

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