The transport properties of ferromagnetic metals

V.S. Lutovinov and S.A. Pudov

Physica A: Statistical Mechanics and its Applications, 1991, vol. 171, issue 2, 403-452

Abstract: In the framework of s-d(f) exchange model the conductivity of pure ferromagnetic metals is considered. The calculations are based on the system of quantum kinetic equations, derived diagrammatically using the linear response concept. For solving the system of integral equations for the vertex function associated with the deviation of electron distribution function from the equilibrium value, the Chapman-Enskog method is used. In the frequency range 1τ≲ω⪡T the results for the conductivity σ(ω) differ from the usual Drude-Zener formula due to renormalization effects caused by electron-magnon interactions. The temperature dependence of the static resistivity ϱ = 1σ(0) is described by the following scenario: ϱ≈T92 in the low temperature region T⪡T0, ϱ≈T2 in the range T0⪡T⪡Tc and ϱ≈ T at elevated temperatures T⪡Tc.

Date: 1991
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:171:y:1991:i:2:p:403-452

DOI: 10.1016/0378-4371(91)90286-L

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