Magnetization Compensation Temperature and Frustration-Induced Topological Defects in Ferrimagnetic Antiperovskite ${\mathrm{Mn}}_{4}\mathrm{N}$

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

Temuujin Bayaraa, Changsong Xu, and L. Bellaiche

Phys. Rev. Lett. 127, 217204 – Published 18 November 2021

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.

Received 11 May 2021
Accepted 19 October 2021

DOI:https://doi.org/10.1103/PhysRevLett.127.217204

Physics Subject Headings (PhySH)

Ferrimagnetism Frustrated magnetism Magnetic coupling Magnetic interactions Magnetic order Magnetic texture Spin texture Spintronics

Topological materials

First-principles calculations

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Temuujin Bayaraa ¹, Changsong Xu ^1,2,*, and L. Bellaiche^1,2

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