dc.contributor.author
Klots, Andrey R.
dc.contributor.author
Weintrub, Benjamin
dc.contributor.author
Prasai, Dhiraj
dc.contributor.author
Kidd, Daniel
dc.contributor.author
Varga, Kalman
dc.contributor.author
Velizhanin, Kirill A.
dc.contributor.author
Bolotin, Kirill
dc.date.accessioned
2018-06-08T11:09:40Z
dc.date.available
2018-02-01T09:43:55.414Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/21726
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-25014
dc.description.abstract
We report a combined theoretical/experimental study of dynamic screening of
excitons in media with frequency-dependent dielectric functions. We develop an
analytical model showing that interparticle interactions in an exciton are
screened in the range of frequencies from zero to the characteristic binding
energy depending on the symmetries and transition energies of that exciton.
The problem of the dynamic screening is then reduced to simply solving the
Schrodinger equation with an effectively frequency-independent potential.
Quantitative predictions of the model are experimentally verified using a test
system: neutral, charged and defect-bound excitons in two-dimensional
monolayer WS2, screened by metallic, liquid, and semiconducting environments.
The screening-induced shifts of the excitonic peaks in photoluminescence
spectra are in good agreement with our model.
de
dc.format.extent
7 Seiten
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
Optical properties and devices
dc.subject
Two-dimensional materials
dc.title
Controlled dynamic screening of excitonic complexes in 2D semiconductors
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation
Scientific Reports 8 (2018), Artikel Nr. 768
dcterms.bibliographicCitation.doi
10.1038/s41598-017-18803-y
dcterms.bibliographicCitation.url
http://doi.org/10.1038/s41598-017-18803-y
refubium.affiliation
Physik
de
refubium.funding
Deutsche Forschungsgemeinschaft (DFG)
refubium.mycore.fudocsId
FUDOCS_document_000000028923
refubium.note.author
Gefördert durch die DFG und den Open-Access-Publikationsfonds der Freien Universität Berlin.
refubium.resourceType.isindependentpub
no
refubium.mycore.derivateId
FUDOCS_derivate_000000009384
dcterms.accessRights.openaire
open access
dc.relation.hascorrection
https://refubium.fu-berlin.de/handle/fub188/24168
dcterms.isPartOf.issn
2045-2322