[16a-D419-1~11] 10.2 スピン基盤技術・萌芽的デバイス技術

▲ [16a-D419-4] Temperature Dependence of Spin-Charge Conversion Efficiency for Co₃Sn₂S₂ Thin Film

〇Takeshi Seki¹、Yong-Chang Lau^1,2、Junya Ikeda¹、Kohei Fujiwara¹、Akihiro Ozawa¹、Satoshi Iihama^3,4、Kentaro Nomura^1,5、Atsushi Tsukazaki^1,6 (1.IMR, Tohoku Univ.、2.IOP, CAS、3.FRIS, Tohoku Univ.、4.WPI-AIMR, Tohoku Univ.、5.Dept. of Phys., Kyushu Univ.、6.CSIS, Tohoku Univ.)

キーワード：Spin Hall effect, Topological material, Spin torque ferromagnetic resonance

We report the temperature (T) dependence of spin-charge conversion for the Co₃Sn₂S₂ (CSS) thin film by measuring the spin-torque ferromagnetic resonance for the trilayer consisting of CSS / Cu / CoFeB. A definite increase in the spin-charge conversion efficiency is observed at T below the phase transition temperature, indicating that the phase transition to the ferromagnetic CSS promotes the highly efficient spin-charge conversion.