Magneto-electronic properties of the AA- and
ABC-stacked graphites |
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Authors: | C L Lu C P Chang M F Lin |
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Institution: | (1) Department of Physics, National Cheng Kong University, 701 Tainan, Taiwan;(2) Center of General Education, Tainan University of Technology, 710 Tainan, Taiwan;(3) National Center for Theoretical Sciences, 701 Tainan, Taiwan |
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Abstract: | In this study, we apply the tight-binding method to
magneto-electronic properties of the AA- and ABC-stacked graphites,
which are strongly dependent on the interlayer interactions, the
magnetic field, and the stacking sequences. First of all, the
interlayer interactions induce the significant changes in the energy
dispersions, the band symmetry about the Fermi level, the overlap
between valence and conduction bands, the band width, and the
band-edge states or the symmetry points. Then, the magnetic field
induces the Peierls phase in the Bloch functions and thus strongly
affects the energy dispersions of the Landau Levels, the subband
spacings, the energy width, and the special structures in density of
states (DOS). Finally, the stacking sequences dominates over the
low-energy band overlap and the anisotropy of energy bands. The
effects mentioned above are exactly reflected in the density of
state. Here, DOS exhibits the 3D, 2D, and 1D characteristics. |
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Keywords: | 71 10 -w Theories and models of many-electron systems 71 20 -b Electron density of states and band structure of crystalline solids 71 70 Di Landau levels |
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