Strongly distinct electrical response between circular and valley polarization in bilayer transition metal dichalcogenides

 |  Login

Show simple item record

dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Du, Luojun
dc.contributor.author Liao, Mengzhou
dc.contributor.author Liu, Gui Bin
dc.contributor.author Wang, Qinqin
dc.contributor.author Yang, Rong
dc.contributor.author Shi, Dongxia
dc.contributor.author Yao, Yugui
dc.contributor.author Zhang, Guangyu
dc.date.accessioned 2019-06-20T13:17:34Z
dc.date.available 2019-06-20T13:17:34Z
dc.date.issued 2019-05-10
dc.identifier.citation Du , L , Liao , M , Liu , G B , Wang , Q , Yang , R , Shi , D , Yao , Y & Zhang , G 2019 , ' Strongly distinct electrical response between circular and valley polarization in bilayer transition metal dichalcogenides ' Physical Review B , vol. 99 , no. 19 , 195415 . https://doi.org/10.1103/PhysRevB.99.195415 en
dc.identifier.issn 2469-9950
dc.identifier.issn 2469-9969
dc.identifier.other PURE UUID: f6790dc7-f63a-4d2e-9525-46984a2219d0
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/strongly-distinct-electrical-response-between-circular-and-valley-polarization-in-bilayer-transition-metal-dichalcogenides(f6790dc7-f63a-4d2e-9525-46984a2219d0).html
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85066397751&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/34723200/ELEC_Du_Strongly_distinct_PhysRevB.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/38895
dc.description.abstract We introduce a physical model to describe the influence of a perpendicular electric field on circular polarization (CP) and valley polarization (VP) in bilayer transition metal dichalcogenides. Our results uncover that electric-field-dependent CP and VP are quite distinct from each other. The dependence of CP on the electric field harbors a W pattern and possesses the minimum when the potential energy difference between the two layers is equal to the strength of spin-orbit coupling. Such dependence of CP stems from the modulation of energy cost for interlayer hopping and spin-dependent layer polarization. In contrast, VP is strictly absent in primitive bilayers and increases monotonically with increasing strength of electric field, resulting from the continuous variation of valley magnetic moments and inversion-symmetry breaking. Our model elaborates well the recent experimental observations for which the origin is under debate. Moreover, we demonstrate that the manipulation of layer and valley pseudospin is fully tunable by perpendicular electric fields, paving the way for prospects in electrical control of exotic layer-valleytronics. en
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher American Physical Society
dc.relation.ispartofseries Physical Review B en
dc.relation.ispartofseries Volume 99, issue 19 en
dc.rights openAccess en
dc.subject.other Electronic, Optical and Magnetic Materials en
dc.subject.other Condensed Matter Physics en
dc.subject.other 114 Physical sciences en
dc.title Strongly distinct electrical response between circular and valley polarization in bilayer transition metal dichalcogenides en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Electronics and Nanoengineering
dc.contributor.department Chinese Academy of Sciences
dc.contributor.department Beijing Institute of Technology
dc.contributor.department Department of Electronics and Nanoengineering en
dc.subject.keyword Electronic, Optical and Magnetic Materials
dc.subject.keyword Condensed Matter Physics
dc.subject.keyword 114 Physical sciences
dc.identifier.urn URN:NBN:fi:aalto-201906203961
dc.identifier.doi 10.1103/PhysRevB.99.195415
dc.type.version publishedVersion


Files in this item

Files Size Format View

There are no open access files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search archive


Advanced Search

article-iconSubmit a publication

Browse