Journal
PHYSICAL REVIEW B
Volume 88, Issue 15, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.88.155405
Keywords
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Funding
- Spanish MECD [FIS2011-23713, PIB2010BZ-00512, FPA2009-10612, FPA2012-34456]
- Spanish Consolider-Ingenio Programme CPAN [CSD2007-00042]
- Basque Government [IT559-10]
- NSF [DRM-1005035]
- Programa Nacional de Movilidad de Recursos Humanos (Spanish MECD)
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We 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.
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