Corpus ID: 118960551

Conductivity activation energy for bilayer hetero-structures at integer filling numbers

@inproceedings{VFalko2000ConductivityAE,
  title={Conductivity activation energy for bilayer hetero-structures at integer filling numbers},
  author={V.Falko and S.V.Iordanski and UK A.KashubaLancasterUniversity and Landau Institute Moscow},
  year={2000}
}
  • V.Falko, S.V.Iordanski, +1 author Landau Institute Moscow
  • Published 2000
  • Physics
  • We report on study of low-energy excitations in a bilayer hetero-structure 2D electron gas. We split the bilayer Hamiltonian into SU(4)-symmetric part and the anisotropy part and treat the latter as a perturbation. We find that both Goldstone and the charged excitations - skyrmions - are goverened by the non-linear Sigma Model. We calculate the anisotropic energy gap of the skyrmion to have a prominent minimum in the canted antiferromagnetic phase of bilayer. We compare our findings with the… CONTINUE READING