Show simple item record

dc.contributor.authorBrida, D
dc.contributor.authorTomadin, A
dc.contributor.authorManzoni, C
dc.contributor.authorKim, YJ
dc.contributor.authorLombardo, Antonio
dc.contributor.authorMilana, Silvia
dc.contributor.authorNair, RR
dc.contributor.authorNovoselov, KS
dc.contributor.authorFerrari, Andrea
dc.contributor.authorCerullo, G
dc.contributor.authorPolini, M
dc.date.accessioned2018-11-30T00:31:13Z
dc.date.available2018-11-30T00:31:13Z
dc.date.issued2013
dc.identifier.issn2041-1723
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/286107
dc.description.abstractGraphene is emerging as a viable alternative to conventional optoelectronic, plasmonic and nanophotonic materials. The interaction of light with charge carriers creates an out-of-equilibrium distribution, which relaxes on an ultrafast timescale to a hot Fermi-Dirac distribution, that subsequently cools emitting phonons. Although the slower relaxation mechanisms have been extensively investigated, the initial stages still pose a challenge. Experimentally, they defy the resolution of most pump-probe setups, due to the extremely fast sub-100 fs carrier dynamics. Theoretically, massless Dirac fermions represent a novel many-body problem, fundamentally different from Schrödinger fermions. Here we combine pump-probe spectroscopy with a microscopic theory to investigate electron-electron interactions during the early stages of relaxation. We identify the mechanisms controlling the ultrafast dynamics, in particular the role of collinear scattering. This gives rise to Auger processes, including charge multiplication, which is key in photovoltage generation and photodetectors.
dc.format.mediumPrint
dc.languageeng
dc.publisherSpringer Science and Business Media LLC
dc.titleUltrafast collinear scattering and carrier multiplication in graphene.
dc.typeArticle
prism.publicationDate2013
prism.publicationNameNat Commun
prism.startingPage1987
prism.volume4
dc.identifier.doi10.17863/CAM.33422
dcterms.dateAccepted2013-05-08
rioxxterms.versionofrecord10.1038/ncomms2987
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2013-01
dc.contributor.orcidLombardo, Antonio [0000-0003-3088-6458]
dc.contributor.orcidFerrari, Andrea [0000-0003-0907-9993]
dc.identifier.eissn2041-1723
dc.publisher.urlhttp://dx.doi.org/10.1038/ncomms2987
rioxxterms.typeJournal Article/Review
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/G030480/1)
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/G042357/1)
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/K01711X/1)
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/K017144/1)
cam.issuedOnline2013-06-17
rioxxterms.freetoread.startdate2014-01-31


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record