[10p-S302-1~18] 10.2 Fundamental and exploratory device technologies for spin

▼ [10p-S302-12] Spin-orbit torque efficiency in non-collinear antiferromagnet / heavy metal heterostructures

〇(M1)Keisuke Kishi^1,2, Yutaro Takeuchi³, Yuta Yamane^4,2, Ju-Young Yoon^1,2, Ryota Takechi^1,2, Butsurin Jinnai³, Shun Kanai^6,7,2, Jun'ichi Ieda⁵, Hideo Ohno^1,2,3,6,7,8, Shunsuke Fukami^1,2,3,6,7,8 (1.Graduate School of Engineering, Tohoku Univ., 2.RIEC, Tohoku Univ., 3.AIMR, Tohoku Univ., 4.FRIS, Tohoku Univ., 5.ASRC, JAEA, 6.CSRN, Tohoku Univ., 7.CSIS, Tohoku Univ., 8.CIES, Tohoku Univ.)

Keywords:antiferromagnet, Spin-orbit torque

Electrical manipulation of antiferromagnetic materials is a representative outcome in antiferromagnetic spintronics, a newly established field attracting increasing attention. A recent study showed a novel spintronic phenomenon, that is, the rotation of chiral-spin structure by spin-orbit torque (SOT) in M-plane oriented non-collinear antiferromagnet Mn₃Sn film. Of particular interest in the antiferromagnetic spintronics is a quantification of the efficiency of SOT acting on the antiferromagnetic ordering, which has never been addressed in any material systems. In this work, we report the determination of SOT efficiency in non-collinear antiferromagnet Mn₃Sn / heavy metal heterostructures.