Giant anomalous Hall and Nernst conductivities in cubic Fe₃Pt and Ni₃In

Abstract

The topological anomalous Hall effect (AHE) and the anomalous Nernst effect (ANE) are of great interest for the development of spintronic devices for energy-efficient data storage and energy harvesting. Using first-principles calculations, we have studied the anomalous Hall conductivity (AHC) and anomalous Nernst conductivity (ANC) of six ferromagnetic compounds Co3Al, Fe3Ge, Fe3Pt, Ni3Ga, Ni3In, and Rh3Cr belonging to the cubic Cu3Au structure. We observed a large AHC of 1973 S/cm Fe3Pt. Parallel to the large AHC, a giant ANC of -5.41 A/mK and -4.18 A/mK is observed for Ni3In and Co3Al, respectively. Finally, we found that AHC and ANC can be adjusted by switching the magnetization direction.