[9a-PA1-1~50] 9 Applied Materials Science (Poster)

[9a-PA1-46] First-Principles Analysis of the Stress–Magnetization Response in Antiferromagnetic Mn₃Sn

〇(M2)Soichiro Kikuchi¹, Yuki Yanagi², Michi-To Suzuki¹ (1.Osaka Metro. Univ., 2.Toyama Pref. Univ.)

Keywords:

First-principles calculations,Antiferromagnet,Stress response

Noncollinear antiferromagnet Mn₃Sn exhibits a large anomalous Hall effect at room temperature despite its very small net magnetization, making it a promising platform for antiferromagnetic spintronics. Recent studies have shown that strain can control its anomalous Hall response, suggesting mechanical control of antiferromagnetic properties. In this work, we investigate the stress–magnetization response of Mn₃Sn using first-principles calculations. We apply several deformation modes, including compression, tension, and shear, and analyze how the direction and type of stress break the balance of Mn magnetic moments and induce a net magnetization. By combining first-principles results with magnetic-symmetry considerations, we organize the relationship between stress states and induced magnetization as a stress–magnetization response map, and discuss the possibility of mechanically controlling the magnetization direction in antiferromagnets.