title: Feature-rich magnetic quantization in sliding bilayer graphenes.
abstract: The generalized tight-binding model, based on the subenvelope functions of distinct sublattices, is developed to investigate the magnetic quantization in sliding bilayer graphenes. The relative shift of two graphene layers induces a dramatic transformation between the Dirac-cone structure and the parabolic band structure, and thus leads to drastic changes of Landau levels (LLs) in the spatial symmetry, initial formation energy, intergroup anti-crossing, state degeneracy and semiconductor-metal transition. There exist three kinds of LLs, i.e., well-behaved, perturbed and undefined LLs, which are characterized by a specific mode, a main mode plus side modes, and a disordered mode, respectively. Such LLs are clearly revealed in diverse magneto-optical selection rules. Specially, the undefined LLs frequently exhibit intergroup anti-crossings in the field-dependent energy spectra, and show a large number of absorption peaks without optical selection rules.
authors.affiliation: Department of Physics, National Cheng Kung University, Taiwan.
authors.forename: Yao-Kung
authors.initials: YK
authors.lastname: Huang
authors.affiliation: Department of Physics, National Cheng Kung University, Taiwan.
authors.forename: Szu-Chao
authors.initials: SC
authors.lastname: Chen
authors.affiliation: Department of Physics and Texas Center for Superconductivity, University of Houston, Texas, U.S.A.
authors.forename: Yen-Hung
authors.initials: YH
authors.lastname: Ho
authors.affiliation: Department of Physics, National Cheng Kung University, Taiwan.
authors.forename: Chiun-Yan
authors.initials: CY
authors.lastname: Lin
authors.affiliation: 1] Department of Physics, National Cheng Kung University, Taiwan [2] National Center for Theoretical Sciences (south), Taiwan.
authors.forename: Ming-Fa
authors.initials: MF
authors.lastname: Lin