Exploring electronic structure of one-atom thick polycrystalline graphene films : a nano angle resolved photoemission study - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Scientific Reports Année : 2013

Exploring electronic structure of one-atom thick polycrystalline graphene films : a nano angle resolved photoemission study

J. Avila
  • Fonction : Auteur
I. Razado
  • Fonction : Auteur
S. Lorcy
  • Fonction : Auteur
R. Fleurier
  • Fonction : Auteur
D. Vignaud
X. Wallart
M.C. Asensio
  • Fonction : Auteur

Résumé

The ability to produce large, continuous and defect free films of graphene is presently a major challenge for multiple applications. Even though the scalability of graphene films is closely associated to a manifest polycrystalline character, only a few numbers of experiments have explored so far the electronic structure down to single graphene grains. Here we report a high resolution angle and lateral resolved photoelectron spectroscopy (nano-ARPES) study of one-atom thick graphene films on thin copper foils synthesized by chemical vapor deposition. Our results show the robustness of the Dirac relativistic-like electronic spectrum as a function of the size, shape and orientation of the single-crystal pristine grains in the graphene films investigated. Moreover, by mapping grain by grain the electronic dynamics of this unique Dirac system, we show that the single-grain gap-size is 80% smaller than the multi-grain gap recently reported by classical ARPES.
Fichier principal
Vignette du fichier
srep02439.pdf (3.35 Mo) Télécharger le fichier
Origine : Publication financée par une institution
Licence : CC BY NC ND - Paternité - Pas d'utilisation commerciale - Pas de modification

Dates et versions

hal-00871897 , version 1 (26-08-2022)

Licence

Paternité - Pas d'utilisation commerciale - Pas de modification

Identifiants

Citer

J. Avila, I. Razado, S. Lorcy, R. Fleurier, E. Pichonat, et al.. Exploring electronic structure of one-atom thick polycrystalline graphene films : a nano angle resolved photoemission study. Scientific Reports, 2013, 3, pp.2439-1-8. ⟨10.1038/srep02439⟩. ⟨hal-00871897⟩
27 Consultations
19 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More