[14p-PA1-1~74] 10 Spintronics and Magnetics

[14p-PA1-4] Anomalous Hall Effect and Anisotropic Magnetoresistance Effect in Co₂TiSi Heusler Epitaxial Films

〇Min Liu¹, Mikihiko Oogane¹, Masakiyo Tsunoda¹, Yasuo Ando¹ (1.Tohoku Univ.)

Keywords:Heusler alloy, Weyl semimetal, Anomalous Hall effect

Recently, Co₂TiSi full-Heusler alloy is theoretically predicted that is the Weyl semimetal, and also the half-metal. Since it is expected that a large anomalous Hall effect can be observed in the Weyl semimetal materials, Co₂TiSi is an attractive material showing both a large anomalous Hall effect and a large spin polarization. In this research, we optimized the fabrication conditions for producing Co₂TiSi epitaxial thin films and investigated their anomalous Hall effect and the anisotropic magnetoresistance effect.