Large anomalous Nernst effect and nodal plane in an iron-based kagome ferromagnet

Kagome ferromagnet Fe 3 Sn exhibits large magnetic thermoelectric effect due to Berry curvature enhanced by a nodal plane.

Universal Upper Bound for the Entropy of Superconducting Vortices and the Quantum Nernst Effect

We show that the entropy per quantum vortex per layer in superconductors in external magnetic fields is bounded by the universal value kBln2, which explains puzzling results of recent experiments on the Nernst effect.

Anomalous Nernst effect dependence on composition in Fe100-X Rh X alloys

We studied the anomalous Nernst effect in CsCl-type Fe100-X Rh X (X = 45, 48, 50, 52, 54, 60) with a thickness of 50 nm deposited on a thermally oxidized Si substrate. Samples with X < 48 certainly have a ferromagnetic phase, exhibiting the anomalous Nernst effect. The composition dependence of the anomalous Nernst coefficient S yx agreed with the transverse thermoelectric conductivity α yx. |S yx | and |α yx | were maximized at X = 48, which has a ferromagnetic state close to the phase transition state. The maximization of |α yx | at X = 48 can be explained using band structure-based calculations , where |α yx | rapidly increases near the phase transition.