Weyl nodes and magnetostructural instability in antiperovskite Mn3ZnC
Artikel i vetenskaplig tidskrift, 2019

The room temperature ferromagnetic phase of the cubic antiperovskite Mn3ZnC is suggested from first-principles calculation to be a nodal line Weyl semimetal. Features in the electronic structure that are the hallmark of a nodal line Weyl state - a large density of linear band crossings near the Fermi level - can also be interpreted as signatures of a structural and/or magnetic instability. Indeed, it is known that Mn3ZnC undergoes transitions upon cooling from a paramagnetic to a cubic ferromagnetic state under ambient conditions and then further into a noncollinear ferrimagnetic tetragonal phase at a temperature between 250 K and 200 K. The existence of Weyl nodes and their destruction via structural and magnetic ordering are likely to be relevant to a range of magnetostructurally coupled materials. © 2019 Author(s).


S. M.L. Teicher

University of California

Ida Svenningsson

Student vid Chalmers

University of California

L. M. Schoop

Princeton University

R. Seshadri

University of California

APL Materials

2166-532X (eISSN)

Vol. 7 12 121104


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