Direct View of Hot Carrier Dynamics in Graphene (Articolo in rivista)

Type
Label
  • Direct View of Hot Carrier Dynamics in Graphene (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevLett.111.027403 (literal)
Alternative label
  • Johannsen, Jens Christian; Ulstrup, Soren; Cilento, Federico; Crepaldi, Alberto; Zacchigna, Michele; Cacho, Cephise; Turcu, I. C. Edmond; Springate, Emma; Fromm, Felix; Raidel, Christian; Seyller, Thomas; Parmigiani, Fulvio; Grioni, Marco; Hofmann, Philip (2013)
    Direct View of Hot Carrier Dynamics in Graphene
    in Physical review letters (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Johannsen, Jens Christian; Ulstrup, Soren; Cilento, Federico; Crepaldi, Alberto; Zacchigna, Michele; Cacho, Cephise; Turcu, I. C. Edmond; Springate, Emma; Fromm, Felix; Raidel, Christian; Seyller, Thomas; Parmigiani, Fulvio; Grioni, Marco; Hofmann, Philip (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 111 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 5 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 2 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Ecole Polytechnique Federale de Lausanne; Aarhus University; Sincrotrone Trieste; IOM CNR Lab TASC; STFC Rutherford Appleton Laboratory; Tech Univ Chemnitz; University of Trieste (literal)
Titolo
  • Direct View of Hot Carrier Dynamics in Graphene (literal)
Abstract
  • The ultrafast dynamics of excited carriers in graphene is closely linked to the Dirac spectrum and plays a central role for many electronic and optoelectronic applications. Harvesting energy from excited electron-hole pairs, for instance, is only possible if these pairs can be separated before they lose energy to vibrations, merely heating the lattice. Until now, the hot carrier dynamics in graphene could only be accessed indirectly. Here, we present a dynamical view on the Dirac cone by time-and angle-resolved photoemission spectroscopy. This allows us to show the quasi-instant thermalization of the electron gas to a temperature of approximate to 2000 K, to determine the time-resolved carrier density, and to disentangle the subsequent decay into excitations of optical phonons and acoustic phonons (directly and via supercollisions). (literal)
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