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
More filters
Journal ArticleDOI
Organic Solar Cells: A Review of Materials, Limitations, and Possibilities for Improvement
TL;DR: In order to take advantage of the low cost for such devices, major improvements are necessary which include: an efficiency of around 10%, high stability from degradation under real-world conditions, novel optically active materials, and development of novel fabrication approaches.
Journal ArticleDOI
Effect of covalent chemistry on the electronic structure and properties of carbon nanotubes and graphene.
Elena Bekyarova,Santanu Sarkar,Feihu Wang,Mikhail E. Itkis,Irina Kalinina,Xiaojuan Tian,Robert C. Haddon +6 more
TL;DR: In this paper, the degenerate valence and conduction bands of graphene at the Dirac point and the relationship of their orbital coefficients to the HOMO and LUMO of benzene and to the Clar structures of graphene are discussed.
Journal ArticleDOI
Clean-lifting transfer of large-area residual-free graphene films.
Di Yan Wang,I-Sheng Huang,Po-Hsun Ho,Shao Sian Li,Yun-Chieh Yeh,Duan-Wei Wang,Wei-Liang Chen,Yu-Yang Lee,Yu-Ming Chang,Chia Chun Chen,Chia Chun Chen,Chi-Te Liang,Chun-Wei Chen +12 more
TL;DR: The CLT technique without using any organic support or adhesives can produce residual-free graphene films with large-area processability, and has great potential for future industrial production of graphene-based electronics or optoelectronics.
Journal ArticleDOI
Graphene Phase Modulator
Vito Sorianello,Michele Midrio,Giampiero Contestabile,I. Asselberg,J. Van Campenhout,C. Huyghebaerts,Ilya Goykhman,A. K. Ott,Andrea C. Ferrari,Marco Romagnoli +9 more
TL;DR: In this article, the authors demonstrate a 10Gb/s Graphene Phase Modulator (GPM) integrated in a Mach-Zehnder interferometer configuration, with a phase-shifter length of only 300$\mu$m, and 35dB extinction ratio.
Journal ArticleDOI
Adsorption of Cu, Ag, and Au atoms on graphene including van der Waals interactions
TL;DR: A systematic density functional study of the adsorption of copper, silver, and gold adatoms on pristine graphene, especially accounting for van der Waals (vdW) interactions by the vdW-DF and PBE + D2 methods, which shows that the coinage metal atoms do bind to the graphene sheet.
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.