Ultrafast collinear scattering and carrier multiplication in graphene

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BRIDA, Daniele, Andrea TOMADIN, Cristian MANZONI, Yong Jin KIM, Antonio LOMBARDO, Silvia MILANA, Rahul Raveendran NAIR, Kostya NOVOSELOV, Andrea C. FERRARI, Giulio CERULLO, Marco POLINI, 2013. Ultrafast collinear scattering and carrier multiplication in graphene. In: Nature communications. 4, 1987. eISSN 2041-1723

@article{Brida2013Ultra-29079, title={Ultrafast collinear scattering and carrier multiplication in graphene}, year={2013}, doi={10.1038/ncomms2987}, volume={4}, journal={Nature communications}, author={Brida, Daniele and Tomadin, Andrea and Manzoni, Cristian and Kim, Yong Jin and Lombardo, Antonio and Milana, Silvia and Nair, Rahul Raveendran and Novoselov, Kostya and Ferrari, Andrea C. and Cerullo, Giulio and Polini, Marco}, note={Article Number: 1987} }

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/29079"> <dc:creator>Tomadin, Andrea</dc:creator> <dc:contributor>Lombardo, Antonio</dc:contributor> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/29079"/> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2014-10-07T08:01:08Z</dc:date> <dc:contributor>Nair, Rahul Raveendran</dc:contributor> <dc:creator>Cerullo, Giulio</dc:creator> <dc:creator>Brida, Daniele</dc:creator> <dc:creator>Polini, Marco</dc:creator> <dc:contributor>Brida, Daniele</dc:contributor> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2014-10-07T08:01:08Z</dcterms:available> <dc:creator>Nair, Rahul Raveendran</dc:creator> <dc:creator>Milana, Silvia</dc:creator> <dc:contributor>Tomadin, Andrea</dc:contributor> <dc:creator>Kim, Yong Jin</dc:creator> <dcterms:issued>2013</dcterms:issued> <dcterms:title>Ultrafast collinear scattering and carrier multiplication in graphene</dcterms:title> <dc:language>eng</dc:language> <dc:contributor>Cerullo, Giulio</dc:contributor> <dc:creator>Ferrari, Andrea C.</dc:creator> <dc:contributor>Manzoni, Cristian</dc:contributor> <dcterms:abstract xml:lang="eng">Graphene 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.</dcterms:abstract> <dc:contributor>Novoselov, Kostya</dc:contributor> <dc:creator>Novoselov, Kostya</dc:creator> <dc:contributor>Kim, Yong Jin</dc:contributor> <dc:creator>Lombardo, Antonio</dc:creator> <dcterms:rights rdf:resource="http://nbn-resolving.org/urn:nbn:de:bsz:352-20140905103605204-4002607-1"/> <dc:rights>deposit-license</dc:rights> <dc:contributor>Polini, Marco</dc:contributor> <dc:creator>Manzoni, Cristian</dc:creator> <dc:contributor>Ferrari, Andrea C.</dc:contributor> <dc:contributor>Milana, Silvia</dc:contributor> </rdf:Description> </rdf:RDF>

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