[10a-S302-1~11] 10.2 Fundamental and exploratory device technologies for spin

▼ [10a-S302-2] Antisymmetric interlayer exchange coupling in Pt/Co/Ir/Co/Pt with in-plane spatial inversion breaking

〇(D)Hiroto Masuda¹, Takeshi Seki^1,2,3, Yuta Yamane^4,5, Rajkumar Modak², Ken-ichi Uchida^1,2,3, Jun'ichi Ieda⁶, Yong-Chang Lau^1,3, Shunsuke Fukami^3,5,7,8, Koki Takanashi^1,3,8 (1.IMR, Tohoku Univ., 2.NIMS, 3.CSRN, Tohoku Univ., 4.FRIS, Tohoku Univ., 5.RIEC, Tohoku Univ., 6.ASRC, JAEA, 7.WPI-AIMR, Tohoku Univ., 8.CSIS, Tohoku Univ.)

Keywords:Interlayer exchange coupling, Spin-orbit coupling, Dzyaloshinskii Moriya interaction

Metallic superlattices showing the interlayer exchange coupling (IEC) garner attention. Recently, the long-range antisymmetric exchange interaction (antisymmetric IEC) was observed in a metallic superlattice with in-plane spatial inversion breaking. In this study, we investigated the magnetic structure induced by the symmetric and antisymmetric IEC by designing the in-plane spatial inversion asymmetry of the wedge-shaped Pt/Co/Ir/Co/Pt structure. We revealed the correlation between the symmetric and antisymmetric IEC. In addition, we investigated the effect of antisymmetric IEC on spin-orbit torque switching.