[16a-S2_201-1~13] 10.4 Spintronics in semiconductor, topological material, superconductor, and multiferroics

9:30 AM - 9:45 AM JST(12:30 AM - 12:45 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation AwardEnglish Presentation

[16a-S2_201-3] Magneto-transport properties of thin films of altermagnet α-MnTe grown by MBE

〇Keito Shoji¹, Shinji Kuroda¹ (1.Univ. Tsukuba)

Keywords:

Altermagnetism,MBE

α-MnTe has attracted considerable attention as a representative altermagnetic material in which spin degeneracy is lifted without generating a macroscopic magnetization. In this study, we performed measurements of the anomalous Hall effect and anisotropic magnetoresistance on α-MnTe thin films grown on InP(111)A substrates by molecular beam epitaxy. The anomalous Hall resistance was extracted by subtracting the ordinary Hall contribution, and its temperature dependence was investigated. As a result, the spontaneous anomalous Hall resistance reaches a maximum at 225 K. In addition, angle-dependent magnetoresistance measurements reveal the presence of components reflecting the hexagonal crystal symmetry as well as non-crystalline contributions.The origin of the magneto-transport properties and their dependence on the growth conditions are discussed.