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29 March 2024
 
  » arxiv » cond-mat/0703422

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An insight into the electronic structure of graphene: from monolayer to multi-layer
Z. F. Wang ; Huaixiu Zheng ; Q. W. Shi ; Jie Chen ; Jinlong Yang ; J. G. Hou ;
Date 15 Mar 2007
Subject Mesoscopic Systems and Quantum Hall Effect
AbstractIn this paper, we analytically investigate the electronic structure of Bernal stacking (AB stacking) graphene evolving from monolayer (a zero-gap semiconductor with a linear Dirac-like spectrum around the Fermi energy) to multi-layer (semi-metal bulk graphite). We firstly derive a real space analytical expression for the free Green’s function (propagator) of multi-layer graphene based on the effective-mass approximation. The simulation results exhibit highly spatial anisotropy with three-fold rotational symmetry. By combining with the STM measurement of d2I/dV2 (the second derivative of current), we also provide a clear high-throughput and non-destructive method to identify graphene layers. Such a method is lacking in the emerging graphene research.
Source arXiv, cond-mat/0703422
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