講演情報
[23p-A201-3]Interfacial Dzyaloshinskii-Moriya interaction in a non-collinear antiferromagnet/heavy metal heterostructure
〇Tomohiro Uchimura1,2, Yuta Yamane3, Takaaki Dohi1, Ju-Young Yoon1,2, Yuma Sato1,2, Shun Wakabayashi1,2, Yutaro Takeuchi4, Shun Kanai1,2,5,6, Jun'ichi Ieda7, Hideo Ohno1,2,4,5,8, Shunsuke Fukami1,2,4,5,8,9 (1.RIEC, Tohoku Univ., 2.Graduate School of Engineering, Tohoku Univ., 3.FRIS, Tohoku Univ., 4.WPI-AIMR, Tohoku Univ., 5.CSIS, Tohoku Univ., 6.DEFS, Tohoku Univ., 7.ASRC, JAEA, 8.CIES, Tohoku univ., 9.InaRIS)
キーワード：
spintronics、antiferromagnet、interfacial DMI
The interfacial Dzyaloshinskii-Moriya interaction (DMI), an antisymmetric exchange interaction, gives rise to exotic spin textures such as chiral Néel domain walls and magnetic skyrmions in ferromagnet/heavy metal (HM) heterostructures. While recent studies suggested an existence of the interfacial DMI in antiferromagnet (AFM)/HM heterostructures as well, systematic investigation of the interfacial DMI for AFM remains to be addressed both theoretically and experimentally. In this work, we show the evidence of the interfacial DMI in a non-collinear AFM Mn3Sn/HM heterostructure by current-induced hysteresis loop shift measurements.