Details

Autor(en) / Beteiligte

• Gibertini, Marco
• Tomadin, Andrea
• Guinea, Francisco
• Katsnelson, Mikhail I.
• Polini, Marco

Titel

Electron-hole puddles in the absence of charged impurities

Ist Teil von

• Physical review. B, Condensed matter and materials physics, 2012-05, Vol.85 (20), Article 201405

Erscheinungsjahr

2012

Quelle

PROLA - Physical Review Online Archive

Beschreibungen/Notizen

• It is widely believed that carrier-density inhomogeneities ("electron-hole puddles") in single-layer graphene on a substrate such as quartz are due to charged impurities located close to the graphene sheet. Here we demonstrate by using a Kohn-Sham-Dirac density-functional scheme that corrugations in a real sample are sufficient to determine electron-hole puddles on length scales that are larger than the spatial resolution of state-of-the-art scanning tunneling microscopy.