[10p-S302-1~18] 10.2 スピン基盤技術・萌芽的デバイス技術

▲ [10p-S302-15] Spin-orbit torque in a Ni-Fe single layer

〇Takeshi Seki^1,2、Yong Chang Lau^1,2、Satoshi Iihama^2,3,4、Koki Takanashi^1,2,5 (1.IMR, Tohoku Univ.、2.CSRN, Tohoku Univ.、3.FRIS, Tohoku Univ.、4.WPI-AIMR, Tohoku Univ.、5.CSIS, Tohoku Univ.)

キーワード：spin orbit torque, spin Hall effect, spin current

We report the self-induced spin-orbit torque (SOT) in a Ni-Fe single ferromagnetic layer. The self-induced SOT was investigated for the very thin Ni-Fe layers with and without structural inversion symmetry by measuring the spin torque ferromagnetic resonance. Our results suggest that the damping-like torque observed in the asymmetric Ni-Fe samples comes from the significant spatial change in the properties of Ni-Fe.