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Article: Disorder-dependent valley properties in monolayer WS e2

TitleDisorder-dependent valley properties in monolayer WS e2
Authors
Issue Date2017
Citation
Physical Review B, 2017, v. 96, n. 4, article no. 041302 How to Cite?
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.
Persistent Identifierhttp://hdl.handle.net/10722/298221
ISSN
2020 Impact Factor: 4.036
2020 SCImago Journal Rankings: 1.780
ISI Accession Number ID

 

DC FieldValueLanguage
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.accessioned2021-04-08T03:07:56Z-
dc.date.available2021-04-08T03:07:56Z-
dc.date.issued2017-
dc.identifier.citationPhysical Review B, 2017, v. 96, n. 4, article no. 041302-
dc.identifier.issn2469-9950-
dc.identifier.urihttp://hdl.handle.net/10722/298221-
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.languageeng-
dc.relation.ispartofPhysical Review B-
dc.titleDisorder-dependent valley properties in monolayer WS e2-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1103/PhysRevB.96.041302-
dc.identifier.scopuseid_2-s2.0-85026897469-
dc.identifier.volume96-
dc.identifier.issue4-
dc.identifier.spagearticle no. 041302-
dc.identifier.epagearticle no. 041302-
dc.identifier.eissn2469-9969-
dc.identifier.isiWOS:000405708100004-
dc.identifier.issnl2469-9950-

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