Anisotropic Eliashberg function and electron-phonon coupling in doped graphene (Articolo in rivista)

Type
Label
  • Anisotropic Eliashberg function and electron-phonon coupling in doped 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/PhysRevB.88.081401 (literal)
Alternative label
  • Haberer, D.; Petaccia, L.; Fedorov, A. V.; Praveen, C. S.; Fabris, S.; Piccinin, S.; Vilkov, O.; Vyalikh, D. V.; Preobrajenski, A.; Verbitskiy, N. I.; Shiozawa, H.; Fink, J.; Knupfer, M.; Buechner, B.; Grueneis, A. (2013)
    Anisotropic Eliashberg function and electron-phonon coupling in doped graphene
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Haberer, D.; Petaccia, L.; Fedorov, A. V.; Praveen, C. S.; Fabris, S.; Piccinin, S.; Vilkov, O.; Vyalikh, D. V.; Preobrajenski, A.; Verbitskiy, N. I.; Shiozawa, H.; Fink, J.; Knupfer, M.; Buechner, B.; Grueneis, A. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 88 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 5 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 8 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Institute for Integrative Nanosciences (IIN); Lawrence Berkeley National Laboratory; Elettra Sincrotrone Trieste; Saint Petersburg State University; CNR IOM DEMOCRITOS Theory Elettra Grp; International School for Advanced Studies; Dresden University of Technology; Lund University; University of Vienna; Lomonosov Moscow State University (literal)
Titolo
  • Anisotropic Eliashberg function and electron-phonon coupling in doped graphene (literal)
Abstract
  • We investigate, with high-resolution angle-resolved photoemission spectroscopy, the spectral function of potassium-doped quasi-free-standing graphene on Au. Angle-dependent x-ray photoemission and density functional theory calculations demonstrate that potassium intercalates into the graphene/Au interface, leading to an upshift of the K-derived electronic band above the Fermi level. This empty band is what makes this system perfectly suited to disentangle the contributions to electron-phonon coupling coming from the pi band and K-derived bands. From a self-energy analysis we find an anisotropic electron-phonon coupling strength lambda of 0.1 (0.2) for the K Gamma (K M) high-symmetry directions in momentum space, respectively. Interestingly, the high-energy part of the Eliashberg function which relates to graphene's optical phonons is equal in both directions but only in K M does an additional low-energy part appear. (literal)
Prodotto di
Autore CNR

Incoming links:


Autore CNR di
Prodotto
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
data.CNR.it