Diffusion Thermopower of Ferromagnetic Transition metals

TL;DR

This paper presents a calculation of the diffusion thermopower in ferromagnetic transition metals, revealing that S and dS/dT have opposite signs, aligning qualitatively with high-temperature experimental data.

Contribution

It introduces a simple model showing the opposite signs of S and dS/dT in ferromagnetic metals, differing from free-electron predictions.

Findings

S and dS/dT have opposite signs in ferromagnetic metals.

Results agree qualitatively with high-temperature experiments.

Diffusion thermopower is dominant at high temperatures.

Abstract

This paper discusses a simple calculation for the diffusion thermopower of a transition metal ferromagnet. The main result of this calculation is that unlike in the case of a free-electron model, the diffusion thermopower S and its derivative with respect to temperature dS/dT have opposite signs. The results of this calculation agree qualitatively with experimental results in the high temperature region, where the diffusion thermopower is dominant.