Zero-bias anomaly in the tunneling density of states of graphene

Eros Mariani, Leonid I. Glazman, Alex Kamenev, Felix Von Oppen

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

In the vicinity of the Fermi energy, the band structure of graphene is well described by a Dirac equation. Impurities will generally induce both a scalar potential as well as a (fictitious) gauge field acting on the Dirac fermions. We show that the angular dependence of the zero-bias anomaly in the spatially resolved tunneling density of states around a particular impurity allows one to distinguish between these two contributions. Our predictions can be tested in scanning-tunneling-microscopy measurements on graphene.

Original languageEnglish (US)
Article number165402
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume76
Issue number16
DOIs
StatePublished - Oct 2 2007

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