Magnetization Compensation Temperature and Frustration-Induced Topological Defects in Ferrimagnetic Antiperovskite Mn_{4}N

Temuujin Bayaraa; Changsong Xu; L Bellaiche

doi:10.1103/PhysRevLett.127.217204

Magnetization Compensation Temperature and Frustration-Induced Topological Defects in Ferrimagnetic Antiperovskite Mn_{4}N

Phys Rev Lett. 2021 Nov 19;127(21):217204. doi: 10.1103/PhysRevLett.127.217204.

Authors

Temuujin Bayaraa¹, Changsong Xu^{1

2}, L Bellaiche^{1

2}

Affiliations

¹ Physics Department, University of Arkansas, Fayetteville, Arkansas 72701, USA.
² Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, Arkansas 72701, USA.

PMID: 34860113
DOI: 10.1103/PhysRevLett.127.217204

Abstract

First-principles-based simulations are conducted to investigate magnetic properties and topological spin textures in the antiperovskite Mn_{4}N ferrimagnet. A magnetization compensation temperature, resulting from a competition between different Mn sublattices, is found in this system, when under thermal equilibrium. Striking metastable topological states are also discovered, including nanometric hedgehog-antihedgehog pairs that originate from frustrated exchange interactions rather than the usual Dzyaloshinskii-Moriya interaction.