We predict a large anomalous Nernst effect in the inverse Heusler compensated ferrimagnets ${\mathrm{Ti}}_2\mathrm{Mn}X$ ($X=\mathrm{Al}$, Ga, and In) with vanishing net magnetic moments. Though the net magnetic moment is zero, the Weyl points in these systems lead to a large anomalous Nernst conductivity (ANC) due to the lack of a global time-reversal symmetry operation that inverts the sign of the Berry curvature. In comparison to the noncollinear antiferromagnets ${\mathrm{Mn}}_3\mathrm{Sn}$ and ${\mathrm{Mn}}_3\mathrm{Ge}$, the high ANC stems almost entirely from the Weyl points in this class of compounds, and thus it is topologically protected. This work shows a large ANC with zero net magnetic moments in collinear systems, which is helpful for a comprehensive understanding of the thermoelectric effect in zero-moment magnetic materials and its further applications.

• Received 26 March 2018

DOI:https://doi.org/10.1103/PhysRevB.97.220405