Large Anomalous Nernst Effect in a Skyrmion Crystal

TL;DR

This paper predicts that Skyrmion crystals can exhibit a large anomalous Nernst effect due to their unique spin structures, suggesting potential for thermoelectric applications and guiding future material searches.

Contribution

It introduces a theoretical investigation of thermoelectric properties in Skyrmion crystals, highlighting their large anomalous Nernst effect driven by topological spin structures.

Findings

Large anomalous Hall conductivity observed

Potential for high thermoelectric efficiency in Skyrmion systems

First-principles calculations support material discovery efforts

Abstract

Thermoelectric properties of a model Skyrmion crystal were theoretically investigated, and it was found that its large anomalous Hall conductivity, corresponding to large Chern numbers induced by its peculiar spin structure leads to a large transverse thermoelectric voltage through the anomalous Nernst effect. This implies the possibility of finding good thermoelectric materials among Skyrmion systems, and thus motivates our quests for them by means of the first-principles calculations as were employed here.