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Charge instabilities and topological phases in the extended Hubbard model on the honeycomb lattice with enlarged unit cell
Adolfo G. Grushin, Eduardo V. Castro, Alberto Cortijo +3
We study spontaneous symmetry breaking in a system of spinless fermions in the Honeycomb lattice paying special emphasis to the role of an enlarged unit cell on time reversal symme…
Gauge fields from strain in graphene
Fernando de Juan, Juan L. Mañes, María A. H. Vozmediano
We revise the tight binding approach to strained or curved graphene in the presence of external probes such as Photoemission or Scanning Tunneling Microscopy experiments. We show t…
Vacancy induced zero energy modes in graphene stacks: The case of ABC trilayer
Eduardo V. Castro, M. Pilar López-Sancho, María A. H. Vozmediano
The zero energy modes induced by vacancies in ABC stacked trilayer graphene are investigated. Depending on the position of the vacancy, a new zero energy solution is realised, diff…
Space dependent Fermi velocity in strained graphene
Fernando de Juan, Mauricio Sturla, Maria A. H. Vozmediano
We resolve some apparent discrepancies between two different models for curved graphene: the one based on tight binding and elasticity theory, and the covariant approach based on q…