Scattering-independent anomalous Nernst effect in ferromagnets

Using the full-potential linearized augmented plane-wave method within the density functional theory, we compute all contributions to the scattering-independent part of the thermoelectric conductivity tensor (alpha) over cap, namely, the intrinsic contribution (alpha) over cap (ic) and the side-jump contribution (alpha) over cap (sj). For the ferromagnetic materials bcc Fe, hcp Co, fcc Ni, and L1(0) ordered alloys FePd and FePt, our investigations of the energy and temperature dependence of the intrinsic and side-jump contributions show that they are both of equal importance. Overall, our calculations are able to correctly reproduce the order of magnitude and sign of the experimentally measured signal, suggesting that the scattering-independent part plays an important role in the anomalous Nernst effect of ferromagnets. DOI: 10.1103/PhysRevB.87.060406