Show simple item record

dc.contributor.authorHsu, Wei-Ting
dc.contributor.authorLu, Li-Syuan
dc.contributor.authorWu, Po-Hsun
dc.contributor.authorLee, Ming-Hao
dc.contributor.authorChen, Peng-Jen
dc.contributor.authorWu, Pei-Ying
dc.contributor.authorChou, Yi-Chia
dc.contributor.authorJeng, Horng-Tay
dc.contributor.authorLi, Lain-Jong
dc.contributor.authorChu, Ming-Wen
dc.contributor.authorChang, Wen-Hao
dc.date.accessioned2018-05-31T06:38:47Z
dc.date.available2018-05-31T06:38:47Z
dc.date.issued2018-04-10
dc.identifier.citationHsu W-T, Lu L-S, Wu P-H, Lee M-H, Chen P-J, et al. (2018) Negative circular polarization emissions from WSe2/MoSe2 commensurate heterobilayers. Nature Communications 9. Available: http://dx.doi.org/10.1038/s41467-018-03869-7.
dc.identifier.issn2041-1723
dc.identifier.doi10.1038/s41467-018-03869-7
dc.identifier.urihttp://hdl.handle.net/10754/628003
dc.description.abstractVan der Waals heterobilayers of transition metal dichalcogenides with spin-valley coupling of carriers in different layers have emerged as a new platform for exploring spin/valleytronic applications. The interlayer coupling was predicted to exhibit subtle changes with the interlayer atomic registry. Manually stacked heterobilayers, however, are incommensurate with the inevitable interlayer twist and/or lattice mismatch, where the properties associated with atomic registry are difficult to access by optical means. Here, we unveil the distinct polarization properties of valley-specific interlayer excitons using epitaxially grown, commensurate WSe/MoSe heterobilayers with well-defined (AA and AB) atomic registry. We observe circularly polarized photoluminescence from interlayer excitons, but with a helicity opposite to the optical excitation. The negative circular polarization arises from the quantum interference imposed by interlayer atomic registry, giving rise to distinct polarization selection rules for interlayer excitons. Using selective excitation schemes, we demonstrate the optical addressability for interlayer excitons with different valley configurations and polarization helicities.
dc.description.sponsorshipThis work was supported by the Ministry of Science and Technology (MOST) of Taiwan (MOST-104-2628-M-009-002-MY3, MOST-105-2119-M-009-014-MY3) and AOARD (FA2386-16-1-4035). W.-H.C. acknowledges the support from the Center for Emergent Functional Matter Science (CEFMS) of NCTU. Y.-C.C., M.-W.C., and H.-T.J. acknowledge the support from MOST. L.-J.L. acknowledges the support from KAUST.
dc.publisherSpringer Nature
dc.relation.urlhttps://www.nature.com/articles/s41467-018-03869-7
dc.rightsThe final publication is available at Springer via http://dx.doi.org/10.1038/s41467-018-03869-7
dc.titleNegative circular polarization emissions from WSe2/MoSe2 commensurate heterobilayers
dc.typeArticle
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalNature Communications
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionDepartment of Electrophysics, National Chiao Tung University, Hsinchu, 30010, , Taiwan
dc.contributor.institutionCenter for Condensed Matter Sciences, National Taiwan University, Taipei, 10617, , Taiwan
dc.contributor.institutionInstitute of Physics, Academia Sinica, Taipei, 11529, , , Taiwan
dc.contributor.institutionDepartment of Physics, National Tsing Hua University, Hsinchu, 30013, , Taiwan
dc.contributor.institutionCenter for Emergent Functional Matter Science, National Chiao Tung University, Hsinchu, 30010, , Taiwan
kaust.personLi, Lain-Jong
refterms.dateFOA2018-06-13T10:03:36Z
dc.date.published-online2018-04-10
dc.date.published-print2018-12


Files in this item

Thumbnail
Name:
s41467-018-03869-7.pdf
Size:
1.550Mb
Format:
PDF
Description:
Publisher Version
Thumbnail
Name:
41467_2018_3869_MOESM1_ESM.pdf
Size:
3.769Mb
Format:
PDF
Description:
Supplementary File

This item appears in the following Collection(s)

Show simple item record