The electronic properties of graphene
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In this paper, the basic theoretical aspects of graphene, a one-atom-thick allotrope of carbon, with unusual two-dimensional Dirac-like electronic excitations, are discussed.Abstract:
This article reviews the basic theoretical aspects of graphene, a one-atom-thick allotrope of carbon, with unusual two-dimensional Dirac-like electronic excitations. The Dirac electrons can be controlled by application of external electric and magnetic fields, or by altering sample geometry and/or topology. The Dirac electrons behave in unusual ways in tunneling, confinement, and the integer quantum Hall effect. The electronic properties of graphene stacks are discussed and vary with stacking order and number of layers. Edge (surface) states in graphene depend on the edge termination (zigzag or armchair) and affect the physical properties of nanoribbons. Different types of disorder modify the Dirac equation leading to unusual spectroscopic and transport properties. The effects of electron-electron and electron-phonon interactions in single layer and multilayer graphene are also presented.read more
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Electronics and optoelectronics of two-dimensional transition metal dichalcogenides.
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Graphene: Status and Prospects
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TL;DR: An overview of the synthesis, properties, and applications of graphene and related materials (primarily, graphite oxide and its colloidal suspensions and materials made from them), from a materials science perspective.
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References
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Biased bilayer graphene: semiconductor with a gap tunable by electric field effect
Eduardo V. Castro,J. M. B. Lopes dos Santos,Nuno M. R. Peres,K. S. Novoselov,S. V. Morozov,A. K. Geim,Francisco Guinea,Johan Nilsson,A. H. Castro Neto +8 more
TL;DR: In this paper, the electronic gap of a graphene bilayer can be controlled externally by applying a gate bias, and the gap can be changed from zero to mid-infrared energies by using fields of less, approximately < 1 V/nm, below the electric breakdown of SiO2.
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Intrinsic ripples in graphene
TL;DR: It is found that ripples spontaneously appear owing to thermal fluctuations with a size distribution peaked around 80 A which is compatible with experimental findings and might be due to the multiplicity of chemical bonding in carbon.
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Charged-impurity scattering in graphene
Jian-Hao Chen,Chaun Jang,Shaffique Adam,Michael S. Fuhrer,Ellen D. Williams,Masa Ishigami,Masa Ishigami +6 more
TL;DR: In this paper, a systematic study of the influence of scattering from impurities on the peculiar electronic properties of graphene is conducted by monitoring changes in electronic characteristics of initially clean graphene, by depositing potassium atoms onto its surface in ultrahigh vacuum.
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Graphene bilayer with a twist: electronic structure.
TL;DR: A graphene bilayer with a relative small angle rotation between the layers is considered and it is found that the low energy dispersion is linear, as in a single layer, but the Fermi velocity can be significantly smaller than the single-layer value.
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Breakdown of the adiabatic Born-Oppenheimer approximation in graphene.
Simone Pisana,Michele Lazzeri,Cinzia Casiraghi,Kostya S. Novoselov,Andre K. Geim,Andrea C. Ferrari,Francesco Mauri +6 more
TL;DR: It is shown that ABO fails in graphene, a zero-bandgap semiconductor that becomes a metal if the Fermi energy is tuned applying a gate voltage, Vg, which induces a stiffening of the Raman G peak that cannot be described within ABO.