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Generalized effective Hamiltonian for graphene under nonuniform strain

AuthorsMañes, Juan L.; Juan, Fernando de; Sturla, Mauricio; Vozmediano, María A. H. CSIC ORCID
Issue Date2013
PublisherAmerican Physical Society
CitationPhysical Review B 88: 155405 (2013)
AbstractWe use a symmetry approach to construct a systematic derivative expansion of the low-energy effective Hamiltonian modifying the continuum Dirac description of graphene in the presence of nonuniform elastic deformations. We extract all experimentally relevant terms and describe their physical significance. Among them there is a new gap-opening term that describes the Zeeman coupling of the elastic pseudomagnetic field and the pseudospin. We determine the value of the couplings using a generalized tight-binding model. © 2013 American Physical Society.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevB.88.155405
Identifiersdoi: 10.1103/PhysRevB.88.155405
issn: 1098-0121
e-issn: 1550-235X
Appears in Collections:(ICMM) Artículos
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