The electronic properties of graphene
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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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Drude conductivity of Dirac fermions in graphene
Jason Horng,Chi-Fan Chen,Baisong Geng,Caglar Girit,Yuanbo Zhang,Zhao Hao,Hans A. Bechtel,Michael C. Martin,Alex Zettl,Alex Zettl,Michael F. Crommie,Michael F. Crommie,Y. Ron Shen,Y. Ron Shen,Feng Wang,Feng Wang +15 more
TL;DR: In this paper, the authors report measurements of high-frequency conductivity of graphene from THz to mid-IR at different carrier concentrations, showing that the conductivity exhibits Drude-like frequency dependence and increases dramatically at THz frequencies.
Journal ArticleDOI
Two-dimensional Mo1.33C MXene with divacancy ordering prepared from parent 3D laminate with in-plane chemical ordering.
Quanzheng Tao,Martin Dahlqvist,Jun Lu,Sankalp Kota,Rahele Meshkian,Joseph Halim,Justinas Palisaitis,Lars Hultman,Michel W. Barsoum,Michel W. Barsoum,Per Persson,Johanna Rosen +11 more
TL;DR: This work designs a parent 3D atomic laminate, (Mo2/3Sc1/3)2AlC, with in-plane chemical ordering, and by selectively etching the Al and Sc atoms, shows evidence for 2D Mo1.33C sheets with ordered metal divacancies and high electrical conductivities.
Journal ArticleDOI
Phagraphene: A Low-Energy Graphene Allotrope Composed of 5-6-7 Carbon Rings with Distorted Dirac Cones.
Zhenhai Wang,Xiang-Feng Zhou,Xiaoming Zhang,Qiang Zhu,Huafeng Dong,Mingwen Zhao,Artem R. Oganov +6 more
TL;DR: The electronic structure of phagraphene has distorted Dirac cones, which are lower in energy than most of the predicted 2D carbon allotropes due to its sp(2)-binding features and density of atomic packing comparable to graphene.
Journal Article
Quantum Hall Ferromagnetism in Graphene
TL;DR: A criterion for the occurrence of interaction-driven quantum Hall effects near intermediate integer values of e2/h due to charge gaps in broken symmetry states is derived.
Journal ArticleDOI
Graphene-Silicon Schottky Diodes
TL;DR: The I-V characteristics measured at 100, 300, and 400 K indicate that temperature strongly influences the ideality factor of graphene-silicon Schottky diodes, and the optical transparency of the thin graphene layer allows the underlying silicon substrate to absorb incident laser light and generate a photocurrent.
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.
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.
Journal ArticleDOI
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.