Spectroscopic Signatures of Massless Gap Opening in Graphene
arXiv:0804.2192 · doi:10.1103/PhysRevB.78.115434
Abstract
Gap opening in graphene is usually discussed in terms of a semiconducting-like spectrum, where the appearance of a finite gap at the Dirac point is accompanied by a finite mass for the fermions. In this Letter we propose a gap scenario from graphene which preserves the massless characters of the carriers. This approach explains recent spectroscopic measurements carried out in epitaxially-grown graphene, ranging from photoemission to optical transmission.
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- NMR parameters in gapped graphene systems
- Fate of surface gaps in magnetic topological insulators