Anomalous Hall Effect in Thin Film of the Weyl Antiferromagnet Mn$_3$Sn

TL;DR

This paper reports the successful fabrication of high-quality Mn$_3$Sn thin films and the observation of a large anomalous Hall effect at room temperature, advancing antiferromagnetic spintronics applications.

Contribution

It demonstrates the first high-quality thin film growth of Mn$_3$Sn and observes a significant anomalous Hall effect despite minimal magnetization.

Findings

Large anomalous Hall effect observed at room temperature

Successful fabrication of single-phase Mn$_3$Sn thin films

Potential for antiferromagnetic spintronics development

Abstract

The Weyl antiferromagnet Mn$_3$Sn has recently attracted significant attention as it exhibits various useful functions such as large anomalous Hall effect that are normally absent in antiferromagnets. Here we report the thin film fabrication of the single phase of Mn$_3$Sn and the observation of the large anomalous Hall effect at room temperature despite its vanishingly small magnetization. Our work on the high-quality thin film growth of the Weyl antiferromagnet paves the path for developing the antiferromagnetic spintronics.