dc.contributor.author
Gordeev, Georgy
dc.contributor.author
Flavel, Benjamin
dc.contributor.author
Krupke, Ralph
dc.contributor.author
Kusch, Patryk
dc.contributor.author
Reich, Stephanie
dc.date.accessioned
2019-10-11T10:43:08Z
dc.date.available
2019-10-11T10:43:08Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/25727
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-25491
dc.description.abstract
Carbon nanotubes are one-dimensional nanoscale systems with strongly pronounced chirality-dependent optical properties with multiple excitonic transitions. We investigate the high-energy G mode of semiconducting single-walled nanotubes of different chiralities at first excitonic transition by applying resonant Raman spectroscopy. The G mode intensity dependence on excitation energy yielded asymmetric resonance Raman profiles similar to ones we reported for the second excitonic transition. We find the scattering efficiency to be strongest at the incoming Raman resonance. Still, the degree of asymmetry is different for the first and second transitions and the first transition profiles provide a narrower line shape due to longer exciton lifetimes. The overall scattering efficiency is up to a factor of 25 times more intense at first excitonic transition, compared to the second transition. The fifth-order perturbation theory, with implemented phonon scattering pathways between excitonic states, excellently reproduced experimental data.
en
dc.format.extent
6 Seiten
dc.subject
Electron-phonon coupling
en
dc.subject
Perturbation theory
en
dc.subject
Photoluminescence
en
dc.subject
Raman spectroscopy
en
dc.subject
Resonance techniques
en
dc.subject
Condensed Matter & Materials Physics
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::530 Physik::539 Moderne Physik
dc.title
Asymmetry of resonance Raman profiles in semiconducting single-walled carbon nanotubes at the first excitonic transition
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.articlenumber
045404
dcterms.bibliographicCitation.doi
10.1103/PhysRevB.99.045404
dcterms.bibliographicCitation.journaltitle
Physical Review B
dcterms.bibliographicCitation.number
4
dcterms.bibliographicCitation.volume
99
dcterms.bibliographicCitation.url
https://journals.aps.org/prb/abstract/10.1103/PhysRevB.99.045404
dcterms.rightsHolder.note
Copyright des Verlages
dcterms.rightsHolder.url
http://journals.aps.org/copyrightFAQ.html#post
refubium.affiliation
Physik
refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.issn
2469-9950
dcterms.isPartOf.eissn
2469-9969