Ultrafast Dynamics of Valley-Polarized Excitons in WSe2 Monolayer Studied by Few-Cycle Laser Pulses

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dc.contributor.authorKoutenský, Petrcs
dc.contributor.authorSlobodeniuk, Arturcs
dc.contributor.authorBartoš, Miroslavcs
dc.contributor.authorTrojánek, Františekcs
dc.contributor.authorMalý, Petrcs
dc.contributor.authorKozák, Martincs
dc.coverage.issue7cs
dc.coverage.volume13cs
dc.date.issued2023-03-28cs
dc.description.abstractWe report on the experimental investigation of the ultrafast dynamics of valley-polarized excitons in monolayer WSe (Formula presented.) using transient reflection spectroscopy with few-cycle laser pulses with 7 fs duration. We observe that at room temperature, the anisotropic valley population of excitons decays on two different timescales. The shorter decay time of approximately 120 fs is related to the initial hot exciton relaxation related to the fast direct recombination of excitons from the radiative zone, while the slower picosecond dynamics corresponds to valley depolarization induced by Coloumb exchange-driven transitions of excitons between two inequivalent valleysen
dc.formattextcs
dc.format.extent1-14cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationNanomaterials. 2023, vol. 13, issue 7, p. 1-14.en
dc.identifier.doi10.3390/nano13071207cs
dc.identifier.issn2079-4991cs
dc.identifier.orcid0000-0002-5923-0260cs
dc.identifier.other183439cs
dc.identifier.researcheridB-3350-2014cs
dc.identifier.urihttp://hdl.handle.net/11012/213579
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofNanomaterialscs
dc.relation.urihttps://www.mdpi.com/2079-4991/13/7/1207cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2079-4991/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjecttransition metal dichalcogenide monolayersen
dc.subjectfemtosecond transient reflection spectroscopyen
dc.subjectintravalley excitons dynamicsen
dc.titleUltrafast Dynamics of Valley-Polarized Excitons in WSe2 Monolayer Studied by Few-Cycle Laser Pulsesen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-183439en
sync.item.dbtypeVAVen
sync.item.insts2024.01.03 16:01:37en
sync.item.modts2024.01.02 20:22:30en
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Magneto-Optická a THz Spektroskopiecs
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