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

Abstract

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

References in corpus (1)

• Calculations of spin induced transport in ferromagnets

Cited by in corpus (3)

• Magnetic anisotropy energy of disordered tetragonal Fe-Co systems from ab initio alloy theory
• Lattice distortion tuning resistivity invar effect in high entropy alloys
• Detailed and high-throughput measurement of composition dependence of magnetoresistance and spin-transfer torque using a composition-gradient film: application to Co${}_x$Fe${}_{1-x}$ (0 $\le$ $\text{x}$ $\le$ 1) system