The electronic properties of graphene
TLDR
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
Citations
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Atomic-Scale Evidence for Potential Barriers and Strong Carrier Scattering at Graphene Grain Boundaries: A Scanning Tunneling Microscopy Study
TL;DR: F Fourier analysis of grain boundaries in polycrystalline graphene indicates that backscattering and intervalley scattering are the dominant mechanisms responsible for the mobility reduction in the presence of GBs in CVD-grown graphene.
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Ultrafast Broadband Photodetectors Based on Three-Dimensional Dirac Semimetal Cd 3 AS 2
Jiawei Lai,Qinsheng Wang,Cai-Zhen Li,Shaofeng Ge,J. Li,Wei Lu,Xuefeng Liu,Junchao Ma,Dapeng Yu,Zhi-Min Liao,Dong Sun +10 more
TL;DR: In this work, the realization of an ultrafast broadband Cd3As based photodetector with a high sensitivity, high responsivity and high speed over a broad wavelength range is reported.
Journal ArticleDOI
Exotic electronic states in the world of flat bands: From theory to material
TL;DR: In this paper, the authors reviewed different aspects of flat bands in a nutshell, starting from the standard band theory, they aim to bridge the frontier of FBs with the textbook solid-state physics and discuss various many-body phases associated with such a singular band structure.
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Tuneable electronic properties in graphene
TL;DR: In this article, the authors discuss recent advances in the physics and nanotechnology fabrication of double gated single and few-layer graphene devices, including the discovery of a gate tunable band gap in bilayer graphene and a gate-tunable band overlap in trilayer graphene.
Journal ArticleDOI
Mechanical cleaning of graphene
A. M. Goossens,V. E. Calado,Amelia Barreiro,Kenji Watanabe,Takashi Taniguchi,Lieven M. K. Vandersypen +5 more
TL;DR: In this article, a dual-gated bilayer graphene transistor with hexagonal boron nitride dielectrics exhibited a mobility of ∼36 000 cm2/Vs at low temperature.
References
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Electric Field Effect in Atomically Thin Carbon Films
Kostya S. Novoselov,Andre K. Geim,Sergey V. Morozov,Da Jiang,Y. Zhang,S. V. Dubonos,Irina V. Grigorieva,A. A. Firsov +7 more
TL;DR: Monocrystalline graphitic films are found to be a two-dimensional semimetal with a tiny overlap between valence and conductance bands and they exhibit a strong ambipolar electric field effect.
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The rise of graphene
TL;DR: Owing to its unusual electronic spectrum, graphene has led to the emergence of a new paradigm of 'relativistic' condensed-matter physics, where quantum relativistic phenomena can now be mimicked and tested in table-top experiments.
Book
Theory of elasticity
TL;DR: The theory of the slipline field is used in this article to solve the problem of stable and non-stressed problems in plane strains in a plane-strain scenario.
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Two-dimensional gas of massless Dirac fermions in graphene
Kostya S. Novoselov,A. K. Geim,Sergey V. Morozov,Da Jiang,Mikhail I. Katsnelson,Irina V. Grigorieva,S. V. Dubonos,A. A. Firsov +7 more
TL;DR: This study reports an experimental study of a condensed-matter system (graphene, a single atomic layer of carbon) in which electron transport is essentially governed by Dirac's (relativistic) equation and reveals a variety of unusual phenomena that are characteristic of two-dimensional Dirac fermions.