Systematic Search and A New Family of Skyrmion Materials

TL;DR

This paper proposes a new family of molybdenum nitrides as potential skyrmion hosts, demonstrating through first-principles calculations that they possess strong Dzyaloshinskii-Moriya interactions suitable for skyrmion formation.

Contribution

It introduces a systematic approach to identify new skyrmion materials and predicts molybdenum nitrides as promising candidates based on electronic and magnetic structure analysis.

Findings

Strong Dzyaloshinskii-Moriya interactions in $A_2$Mo$_3$N compounds

Potential realization of skyrmions in molybdenum nitrides

Guidelines for discovering new helimagnetic materials

Abstract

Magnetic skyrmions have recently attracted great attentions. However they are harbored in very limited numbers of magnets up to now. The search of new helimagnetic materials is thus an urgent topic in the field of skyrmion physics. In this letter, we provide a guideline on this issue, and discuss the possibility of realizing skyrmions in a new family of molybdenum nitrides $A_2$Mo$_3$N ($A$=Fe, Co, and Rh). By means of the first-principles calculations, the electronic and magnetic structures are calculated and the existence of strong Dzyaloshinskii-Moriya interaction is demonstrated.