[25a-61C-1~10] 23.1 Joint Session N "Informatics"

10:00 AM - 10:15 AM JST(1:00 AM - 1:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[25a-61C-5] DMI Energy Cost Analysis in the Formation Process of Skyrmions by Extended Landau Free Energy Model

〇(B)Yotaro Machida¹, Michiki Taniwaki¹, Alexandre Foggiatto¹, Chiharu Mitsumata¹, Ippei Obayashi², Yasuaki Hiraoka³, Kyoko Ishizaka⁴, Masato Kotsugi¹ (1.Tokyo Univ. of Sci., 2.Okayama Univ., 3.Kyoto Univ., 4.Univ. of Tokyo)

Keywords:

skyrmion,DMI,machine learning

The extended Landau free energy model was expanded to the formation process of skyrmions, and persistent homology analysis was applied to spin textures to extract features. In machine learning, we quantitatively linked the relationship between structural change and energy using principal component analysis with high explanatory power. The relationship between the structural change of the spin texture and the DMI energy density change was drawn in data space, and the obtained features were found to be robustly connected to magnetization and DMI.