Show simple item record

dc.contributor.authorTran, Kha
dc.contributor.authorSingh, Akshay
dc.contributor.authorSeifert, Joe
dc.contributor.authorWang, Yiping
dc.contributor.authorHao, Kai
dc.contributor.authorHuang, Jing-Kai
dc.contributor.authorLi, Lain-Jong
dc.contributor.authorTaniguchi, Takashi
dc.contributor.authorWatanabe, Kenji
dc.contributor.authorLi, Xiaoqin
dc.date.accessioned2017-08-07T10:52:00Z
dc.date.available2017-08-07T10:52:00Z
dc.date.issued2017-07-18
dc.identifier.citationTran K, Singh A, Seifert J, Wang Y, Hao K, et al. (2017) Disorder-dependent valley properties in monolayer WSe2. Physical Review B 96. Available: http://dx.doi.org/10.1103/PhysRevB.96.041302.
dc.identifier.issn2469-9950
dc.identifier.issn2469-9969
dc.identifier.doi10.1103/PhysRevB.96.041302
dc.identifier.urihttp://hdl.handle.net/10754/625294
dc.description.abstractWe investigate the effect of disorder on exciton valley polarization and valley coherence in monolayer WSe2. By analyzing the polarization properties of photoluminescence, the valley coherence (VC) and valley polarization (VP) are quantified across the inhomogeneously broadened exciton resonance. We find that disorder plays a critical role in the exciton VC, while affecting VP less. For different monolayer samples with disorder characterized by their Stokes shift (SS), VC decreases in samples with higher SS while VP does not follow a simple trend. These two methods consistently demonstrate that VC as defined by the degree of linearly polarized photoluminescence is more sensitive to disorder, motivating further theoretical studies.
dc.description.sponsorshipWe gratefully acknowledge helpful discussions with Galan Moody and Fengcheng Wu. The spectroscopic experiments were jointly supported by NSF DMR-1306878 (A.S.) and NSF EFMA-1542747 (K.T., K.H., J.S., and X.L.). H.L. also gratefully acknowledges support from Welch Foundation Grant No. F-1662. K.W. and T.T. acknowledge support from the Elemental Strategy Initiative conducted by the MEXT, Japan and JSPS KAKENHI Grant No. JP15K21722.
dc.publisherAmerican Physical Society (APS)
dc.relation.urlhttps://journals.aps.org/prb/abstract/10.1103/PhysRevB.96.041302
dc.rightsArchived with thanks to Physical Review B
dc.titleDisorder-dependent valley properties in monolayer WSe2
dc.typeArticle
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalPhysical Review B
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionDepartment of Physics and Center for Complex Quantum Systems, University of Texas at Austin, Austin, Texas 78712, USA
dc.contributor.institutionNational Institute of Material Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
dc.contributor.institutionTexas Materials Institute, University of Texas at Austin, Austin, Texas 78712, USA
dc.identifier.arxividarXiv:1703.08478
kaust.personHuang, Jing-Kai
kaust.personLi, Lain-Jong
refterms.dateFOA2018-06-13T11:20:01Z
dc.date.posted2017-03-24


Files in this item

Thumbnail
Name:
PhysRevB.96.041302.pdf
Size:
384.2Kb
Format:
PDF
Description:
Main article
Thumbnail
Name:
Supplementary-resubmission_v2.pdf
Size:
1.252Mb
Format:
PDF
Description:
Supplemental files

This item appears in the following Collection(s)

Show simple item record