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Valley polarization of singlet and triplet trions in a WS2 monolayer in magnetic fields

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cris.lastimport.scopus2024-02-12T20:47:12Z
dc.abstract.enThe spectral signatures associated with different negatively charged exciton complexes (trions) in a WS2 monolayer encapsulated in hBN are analyzed from low temperature and polarization resolved reflectance contrast (RC) and photoluminescence (PL) experiments, with an applied magnetic field. Based on results obtained from the RC experiment, we show that the valley Zeeman effect affects the optical response of both the singlet and the triplet trion species through the evolution of their energy and of their relative intensity, when applying an external magnetic field. Our analysis allows us to estimate a free electron concentration of ∼1.3 × 1011 cm−2. The observed evolutions based on PL experiments on the same sample are different and can hardly be understood within the same simple frame, highlighting the complexity of relaxation processes involved in the PL response.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorWatanabe, Kenji
dc.contributor.authorFaugeras, Clément
dc.contributor.authorBartos, Miroslav
dc.contributor.authorKapuściński, Piotr
dc.contributor.authorSlobodeniuk, Artur O.
dc.contributor.authorGrzeszczyk, Magdalena
dc.contributor.authorMolas, Maciej
dc.contributor.authorPotemski, Marek
dc.contributor.authorBabiński, Adam
dc.contributor.authorNogajewski, Karol
dc.date.accessioned2024-01-26T11:45:18Z
dc.date.available2024-01-26T11:45:18Z
dc.date.issued2020
dc.description.financePublikacja bezkosztowa
dc.description.number34
dc.description.volume22
dc.identifier.doi10.1039/D0CP02737E
dc.identifier.issn1463-9076
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/124514
dc.identifier.weblinkhttps://doi.org/10.1039/D0CP02737E
dc.languageeng
dc.pbn.affiliationphysical sciences
dc.relation.ispartofPhysical Chemistry Chemical Physics
dc.relation.pages19155-19161
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.titleValley polarization of singlet and triplet trions in a WS2 monolayer in magnetic fields
dc.typeJournalArticle
dspace.entity.typePublication