Strong anomalous Nernst effect in collinear magnetic Weyl semimetals without net magnetic moments

Noky J, Gayles J, Felser C, Sun Y (2018)

Publication Type: Journal article

Publication year: 2018

Journal

Physical Review B American Physical Society

Book Volume: 97

Article Number: 220405

Journal Issue: 22

DOI: 10.1103/PhysRevB.97.220405

Abstract

We predict a large anomalous Nernst effect in the inverse Heusler compensated ferrimagnets Ti2MnX (X=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 Mn3Sn and Mn3Ge, 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.

Involved external institutions

Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids DE Germany (DE)

How to cite

APA:

Noky, J., Gayles, J., Felser, C., & Sun, Y. (2018). Strong anomalous Nernst effect in collinear magnetic Weyl semimetals without net magnetic moments. Physical Review B, 97(22). https://doi.org/10.1103/PhysRevB.97.220405

MLA:

Noky, Jonathan, et al. "Strong anomalous Nernst effect in collinear magnetic Weyl semimetals without net magnetic moments." Physical Review B 97.22 (2018).

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