Enhanced valley splitting of WSe_(2)in twisted van der Waals WSe_(2)/CrI_(3)heterostructures

查看全文 作　　者：Mei [1]Ge;Han [2]Wang;Jizheng [3]Wu;Chen [3]Si;Junfeng [1]Zhang;Shengbai [4]Zhang

机构地区：[1]School of Physics and Information Engineering,Shanxi Normal University,Taiyuan,China;[2]Chemical Sciences Division,Lawrence Berkeley National Laboratory,Berkeley,CA,USA;[3]School of Materials Science and Engineering,Beihang University,Beijing,China;[4]Department of Physics,Applied Physics,and Astronomy,Rensselaer Polytechnic Institute,Troy,NY,USA

出　　处：《npj Computational Materials》索引2022年第1期,共7页

基　　金：Work in China was supported by the National Natural Science Foundation of China(12074235);S.Z.acknowledges the support by the U.S.Department of Energy(DOE)under Grant no.DESC0002623;C.S.also acknowledges support by the open research fund program of the state key laboratory of low dimensional quantum physics(KF202103). 摘　　要：Van der Waals(vdW)heterostructures composed of different two-dimensional(2D)materials offer an easily accessible way to combine properties of individual materials for applications.Owing to the discovery of a set of unanticipated physical phenomena,the twisted 2D vdW heterostructures have gained considerable attention recently.Here,we report enhanced valley splitting in twisted 2D vdW WSe_(2)/CrI_(3)heterostructures.In particular,the splitting can be 1200%(or 5.18 meV)of the value for a non-twisted heterostructure.According to the k·p model,this value is equivalent to a~20 T external magnetic field applied perpendicular to the 2D sheet.The thermodynamic stability of 2D vdW WSe_(2)/CrI_(3)heterostructures,on the other hand,depends linearly on the interlayer twisting angle. 关键词：TWISTED SPLITTING gained

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Enhanced valley splitting of WSe_(2)in twisted van der Waals WSe_(2)/CrI_(3)heterostructures

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