Dzyaloshinskii–Moriya interaction in noncentrosymmetric superlattices

作     者：Woo Seung Ham Abdul-Muizz Pradipto Kay Yakushiji Kwangsu Kim Sonny H.Rhim Kohji Nakamura Yoichi Shiota Sanghoon Kim Teruo Ono 

作者机构：Institute for Chemical ResearchKyoto UniversityUjiKyotoJapan Department of Physics EngineeringMie UniversityTsuMieJapan Faculty of Mathematics and Natural SciencesInstitut Teknologi BandungBandungIndonesia National Institute of Advanced Industrial Science and Technology(AIST)TsukubaIbarakiJapan Department of PhysicsUniversity of UlsanUlsanSouth Korea 

出 版 物：《npj Computational Materials》 (计算材料学（英文）)

年 卷 期：2021年第7卷第1期

页      面：1164-1170页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：Authors gratefully acknowledge prof.Se Kwon Kim for the fruitful discussion.Financial support from the Japan Society for the Promotion of Science(JSPS)KAKENHI Grant No.15H05702 is gratefully acknowledged T.O.was supported by the Collaborative Research Program of the Institute for Chemical Research,Kyoto University S.K.was supported by the Basic Research Laboratory Program through the National Research Foundation of Korea(NRF)funded by the MSIT(NRF-2018R1A4A1020696,NRF-2019R1C1C1010345) A.-M.P.is also supported by Institut Teknologi Bandung through P3MI-ITB 2020 research grant.Computations were performed at Research Institute for Information Technology,Kyushu University 

主　　题：interaction symmetry chiral 

摘      要：Dzyaloshinskii–Moriya interaction(DMI)is considered as one of the most important energies for specific chiral textures such as magnetic *** keys of generating DMI are the absence of structural inversion symmetry and exchange energy with spin–orbit ***,a vast majority of research activities about DMI are mainly limited to heavy metal/ferromagnet bilayer systems,only focusing on their ***,we report an asymmetric band formation in a superlattices(SL)which arises from inversion symmetry breaking in stacking order of atomic layers,implying the role of bulk-like *** bulk DMI is more than 300%larger than simple sum of interfacial ***,the asymmetric band is largely affected by strong spin–orbit coupling,showing crucial role of a heavy metal even in the non-interfacial origin of *** work provides more degrees of freedom to design chiral magnets for spintronics applications.