Observation of the anomalous Nernst effect in altermagnetic candidate Mn₅Si₃.

ABSTRACT: The anomalous Nernst effect generates a voltage transverse to an applied thermal gradient in some magnetically ordered systems. While the effect was considered excluded in compensated magnetic materials with collinear ordering, in the recently identified symmetry-class of altermagnets, the anomalous Nernst effect is possible despite the compensated collinear spin arrangement. In this work, we show that epitaxial Mn₅Si₃ thin films grown on Si manifest an anomalous Nernst effect with a finite spontaneous signal at zero magnetic field despite the vanishing spontaneous magnetization. We attribute this to the previously theoretically predicted and experimentally corroborated altermagnetism of epitaxial Mn₅Si₃ thin films grown on Si. The observed spont

SUBMITTER: Badura A 

PROVIDER: S-EPMC12318009 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature