Charge Puddles in Graphene near the Dirac Point - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Physical Review Letters Année : 2016

Charge Puddles in Graphene near the Dirac Point

Résumé

The charge carrier density in graphene on a dielectric substrate such as SiO2 displays inho-mogeneities, the so-called charge puddles. Because of the linear dispersion relation in monolayer graphene, the puddles are predicted to grow near charge neutrality, a markedly distinct property from conventional two-dimensional electron gases. By performing scanning tunneling mi-croscopy/spectroscopy on a mesoscopic graphene device, we directly observe the puddles' growth, both in spatial extent and in amplitude, as the Fermi level approaches the Dirac point. Self-consistent screening theory provides a unified description of both the macroscopic transport properties and the microscopically observed charge disorder.
Fichier principal
Vignette du fichier
puddles-main-2.pdf (5.64 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01299550 , version 1 (07-04-2016)

Identifiants

Citer

S. Samaddar, I Yudhistira, S Adam, H. Courtois, Clemens Winkelmann. Charge Puddles in Graphene near the Dirac Point. Physical Review Letters, 2016, 116 (12), pp.126804. ⟨10.1103/PhysRevLett.116.126804⟩. ⟨hal-01299550⟩

Collections

UGA CNRS NEEL
235 Consultations
184 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More