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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Evidence of Silicene in Honeycomb Structures of Silicon on Ag(111)
Baojie Feng,Zijing Ding,Sheng Meng,Yugui Yao,Yugui Yao,X. G. He,Peng Cheng,Lan Chen,Kehui Wu +8 more
TL;DR: The finding and evolution of several monolayer superstructures of silicon on Ag(111), depending on the coverage and temperature, are reported, which elucidate how silicene forms onAg(111) surface and provides methods to synthesize high-quality and large-scale silicenes.
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In vitro toxicity evaluation of graphene oxide on A549 cells
Yanli Chang,Sheng-Tao Yang,Sheng-Tao Yang,Jia-Hui Liu,Jia-Hui Liu,Erya Dong,Yan-Wen Wang,Aoneng Cao,Yuanfang Liu,Yuanfang Liu,Haifang Wang +10 more
TL;DR: In this article, a comprehensive study on the toxicity of graphene oxide (GO) by examining the influences of GO on the morphology, viability, mortality and membrane integrity of A549 cells was performed.
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Density functionals for surface science: Exchange-correlation model development with Bayesian error estimation
Jess Wellendorff,Keld T. Lundgaard,Andreas Møgelhøj,Andreas Møgelhøj,Vivien Gabriele Petzold,David D. Landis,Jens K. Nørskov,Jens K. Nørskov,Thomas Bligaard,Thomas Bligaard,Karsten Wedel Jacobsen +10 more
TL;DR: In this paper, a semi-empirical density functional optimization method using regularization and cross-validation methods from machine learning is developed to avoid the overfitting found when standard least-squares methods are applied to high-order polynomial expansions.
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Topological Insulator Materials
TL;DR: Topological insulators represent a new quantum state of matter which is characterized by peculiar edge or surface states that show up due to a topological character of the bulk wave functions as mentioned in this paper.
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Colloquium: Andreev reflection and Klein tunneling in graphene
TL;DR: In this article, a colloquium-style introduction to two electronic processes in a carbon monolayer (graphene) is presented, each having an analog in relativistic quantum mechanics.
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.
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.