Effect of asymmetric Fermi velocity on trigonally warped spectrum of bilayer graphene

  title={Effect of asymmetric Fermi velocity on trigonally warped spectrum of bilayer graphene},
  author={Fatemeh Adinehvand and Hosein Cheraghchi},
  journal={Journal of Physics and Chemistry of Solids},
Abstract We derive an effective Hamiltonian at low energies for bilayer graphene when Fermi velocity manufactured on each layer is different of the velocity measured in pristine graphene. Based on the effective Hamiltonian, we investigate the influence of Fermi velocity asymmetry on the band structure of trigonally warped bilayer graphene in the presence of interlayer applied bias. In this case, the Fermi line at low energies is still preserved its threefold rotational symmetry appearing as the… Expand
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