Beyond Germanides: Anomalous Hall Effect in the Silicide LaMn2Si2

S. V. Streltsov; D. M. Korotin

paper

Beyond Germanides: Anomalous Hall Effect in the Silicide LaMn2Si2

arXiv:2507.23233

Abstract

By combining symmetry analysis and direct density functional calculations including the spin-orbit coupling, we demonstrate that anomalous Hall effect can be observed in not only germanides with general formula RMn $_{2}$ Ge $_{2}$ , where $R$ is a rare-earth ion or Y. Our calculations predict a large anomalous Hall conductivity in LaMn $_{2}$ Si $_{2}$ , with a non-zero $σ_{x y}^{A H}$ component of $- 360 S/cm$ , accompanied by a pronounced magneto-optical response. Remarkably, electron doping of LaMn $_{2}$ Si $_{2}$ is expected to substantially enhance the Hall conductivity, with values reaching up to -650 S/cm. These results suggest that silicides with general formula RM $_{2}$ Si $_{2}$ can be an interesting platform for studying anomalous Hall effect.