The electronic properties of graphene
Reads0
Chats0
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
More filters
Journal ArticleDOI
A Direct and Polymer-Free Method for Transferring Graphene Grown by Chemical Vapor Deposition to Any Substrate
Wei-Hsiang Lin,Ting-Hui Chen,Jan-Kai Chang,Jieh-I Taur,Yuan-Yen Lo,Wei-Li Lee,Chia-Seng Chang,Wei-Bin Su,Chih-I Wu +8 more
TL;DR: A polymer-free method that can routinely transfer relatively large-area graphene to any substrate with advanced electrical properties and superior atomic and chemical structures as compared to the graphene sheets transferred with conventional polymer-assisted methods is demonstrated.
Journal ArticleDOI
Graphene Photonics, Plasmonics, and Optoelectronics
Phaedon Avouris,Marcus Freitag +1 more
TL;DR: In this article, the characteristics of the optical excitations of graphene involving interband, intraband, and collective (plasmon) electronic excitations are discussed and different mechanisms by which photon energy can be converted to an electrical current in graphene.
Journal ArticleDOI
Colloidal graphene oxide/polyaniline nanocomposite and its electrorheology
TL;DR: A nanocomposite of colloidal graphene oxide (CGO) and polyaniline (PANI) was fabricated via in situ oxidation polymerization in the presence of CGO prepared via a modified Hummers method without a dopant.
Journal ArticleDOI
Optimized graphene transfer: Influence of polymethylmethacrylate (PMMA) layer concentration and baking time on graphene final performance
Gabriela Borin Barin,Gabriela Borin Barin,Yi Song,Iara F. Gimenez,Antonio G. Souza Filho,Ledjane Silva Barreto,Jing Kong +6 more
TL;DR: In this article, the influence of transfer parameters on the final structure, morphology and electrical properties of graphene were investigated, and it was shown that a double layer of PMMA can enhance or degrade graphene quality depending on its concentration.
Journal ArticleDOI
Spectroscopic metrics allow in situ measurement of mean size and thickness of liquid-exfoliated few-layer graphene nanosheets
Claudia Backes,Keith R. Paton,Damien Hanlon,Shengjun Yuan,Mikhail I. Katsnelson,James Houston,Ronan J. Smith,David McCloskey,John F. Donegan,Jonathan N. Coleman +9 more
TL;DR: This work measured the extinction, absorption, scattering and Raman spectra for liquid phase exfoliated graphene nanosheets of various lateral sizes and thicknesses, and elucidate the variation of 2D/G band intensities and 2D-band shape with the mean nanosheet thickness, allowing the development of empirical metrics to extract the mean thickness of liquid dispersed nanoshaets from an extinction (or absorption) spectrum.
References
More filters
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.
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.