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
Citations
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Electron Thermionic Emission from Graphene and a Thermionic Energy Converter
Shi-Jun Liang,Lay Kee Ang +1 more
TL;DR: In this article, thermionic emission from a monolayer of suspended graphene has been reconsidered, to account for the electrons in this material behaving like massless fermionic quasiparticles.
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Transport Between Twisted Graphene Layers
TL;DR: In this article, a theory of interlayer transport in few-layer graphene (FLG) systems is presented, which reveals a richer picture in which the specific conductance depends sensitively on single-layer Bloch-state lifetime, in-plane magnetic field, and bias voltage.
Journal ArticleDOI
Unconventional ferroelectricity in moiré heterostructures
Zhiren Zheng,Qiong Ma,Qiong Ma,Zhen Bi,Sergio C. de la Barrera,Ming-Hao Liu,Nannan Mao,Yang Zhang,Natasha Kiper,Kenji Watanabe,Takashi Taniguchi,Jing Kong,William A. Tisdale,Raymond Ashoori,Nuh Gedik,Liang Fu,Su-Yang Xu,Su-Yang Xu,Pablo Jarillo-Herrero +18 more
TL;DR: Electronic ferroelectricity is observed in a graphene-based moiré heterostructure, which is explained using a spontaneous interlayer charge-transfer model driven by layer-specific on-site Coulomb repulsion.
Journal ArticleDOI
Graphene/Semiconductor Hybrid Heterostructures for Optoelectronic Device Applications
TL;DR: In this article, the progress in the development of various optoelectronic devices based on Gr/semiconductor hybrid heterostructures, including /group II-VI nano-structures, /group III-V semiconductors, etc., are reviewed in terms of device design, device performance and physics, processing techniques for performance optimization, etc.
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Valley polarized quantum Hall effect and topological insulator phase transitions in silicene.
TL;DR: It is shown that the combination of an electric field with intrinsic spin orbit interaction leads to quantum phase transitions at the charge neutrality point, providing a tool to experimentally tune the topological state.
References
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Journal ArticleDOI
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.
Journal ArticleDOI
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.