• 文献标题:   Electronic properties of twisted bilayer graphene in high-energy k . p-Hamiltonian approximation
  • 文献类型:   Article
  • 作  者:   GRUSHEVSKAYA HV, KRYLOV GG, CHOI HY, KRUCHININ SP
  • 作者关键词:   bilayer graphene, monolayergraphene, brillouin zone
  • 出版物名称:   MODERN PHYSICS LETTERS B
  • ISSN:   0217-9849 EI 1793-6640
  • 通讯作者地址:   Belarusian State Univ
  • 被引频次:   0
  • DOI:   10.1142/S0217984920400552
  • 出版年:   2020

▎ 摘  要

A model of twisted bilayer graphene has been offered on the base of developed quasi-relativistic approach with high energy k . p-Hamiltonian. Monolayer-graphene twist is accounted as a perturbation of monolayer-graphene Hamiltonian in such a way that at a given point of the Brillouin zone there exists an external non-Abelian gauge field of another monolayer. Majorana-like resonances have been revealed in the band structure of model at a magic rotation angle theta(M) = 1.05 degrees. The simulations have also shown that a superlattice energy gap existing at a rotation angle 1.08 degrees vanishes at a rotation angle 1.0 degrees.