Ab initio GW Many-Body Effects in Graphene (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Ab initio GW Many-Body Effects in Graphene (Articolo in rivista) (literal)

Anno

• 2008-01-01T00:00:00+01:00 (literal)

Alternative label

• Trevisanutto P.E.; Giorgetti C.; Reining L.; Ladisa M.; Olevano V. (2008)
  Ab initio GW Many-Body Effects in Graphene
  in Physical review letters (Print)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Trevisanutto P.E.; Giorgetti C.; Reining L.; Ladisa M.; Olevano V. (literal)

Pagina inizio

• 226405 (literal)

Pagina fine

• 226408 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 101 (literal)

Rivista

• Physical review letters (Rivista)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Inst. Nèel, CNRS and UJF, Grenoble, France, ETSF, Paris, France; Lab. des Solides Irradies, CNRS-CEA, Palaiseau, France, ETSF, Paris, France; Lab. des Solides Irradies, CNRS-CEA, Palaiseau, France, ETSF, Paris, France; CNR-IC, Sede di Bari; Inst. Nèel, CNRS and UJF, Grenoble, France, ETSF, Paris, France; (literal)

Titolo

• Ab initio GW Many-Body Effects in Graphene (literal)

Abstract

• We present an ab initio numerical many-body GW calculation of the band plot in freestanding graphene. We consider the full ionic and electronic structure introducing e-e interaction and correlation effects via a self-energy containing non-Hermitian and dynamical terms. With respect to the density-functional theory local-density approximation, the Fermi velocity is renormalized with an increase of 17%, in better agreement with the experiment. Close to the Dirac point the linear dispersion is modified by the presence of a kink, as observed by angle-resolved photoemission spectroscopy. We demonstrate that the kink is due to low-energy pi ->pi(*) single-particle excitations and to the pi plasmon. The GW self-energy does not open the band gap. (literal)

Prodotto di

• Many-Body Quantum Field Theory: Phenomenology and Applications to Crystals (ICT.P11.001.002) (Modulo)
• Istituto di cristallografia (IC) (Istituto)

Autore CNR

• MASSIMO LADISA (Persona)

Incoming links:

Prodotto

• Istituto di cristallografia (IC) (Istituto)
• Many-Body Quantum Field Theory: Phenomenology and Applications to Crystals (ICT.P11.001.002) (Modulo)

Autore CNR di

• MASSIMO LADISA (Persona)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Physical review letters (Rivista)