The electronic properties of graphene
Citations
13,348 citations
12,117 citations
11,092 citations
8,919 citations
7,903 citations
References
142 citations
"The electronic properties of graphe..." refers background or methods in this paper
...Let us now fo us on the opti al ondu tivity, σxx(ω)(Gusynin et al., 2007; Peres et al., 2006 )....
[...]
...(Peres et al., 2006 )....
[...]
...…on line) Energy spe trum (in units of t) for agraphene ribbon 600a wide, as a fun tion of the momentum k along the ribbon (in units of 1/(√3a)), in the presen e of on ning potential with V0 = 1 eV, λ = 180a.Consider the tight-binding des ription (Chen et al.,2007a; Peres et al., 2006b) of Se ....
[...]
...(203)and (204) redu e to: σ0 = 4 π e2 h , (205)whi h is the so- alled universal ondu tivity of graphene(Fradkin, 1986a,b; Katsnelson, 2006b; Lee, 1993;Ludwig et al., 1994; Nersesyan et al., 1994; Peres et al.,2006 ; Tworzydlo et al., 2006; Yang and Nayak, 2002;Ziegler, 1998)....
[...]
...…Dira fermions in a magneti eld (in luding disorder) an be written as: H = H0+Hiwhere H0 is given by (5) and Hi is the impurity potentialreading (Peres et al., 2006 ): Hi = V Ni ∑ j=1 δ(r − rj)I (192)The formulation of the problem in se ond quantizationrequires the solution of H0, whi h was…...
[...]
141 citations
"The electronic properties of graphe..." refers background in this paper
...…of the di erent broken symmetry phases, in a leansystem, is determined by latti e e e ts, so that it is re-du ed by fa tors of order a/lB, where a is a length ofthe order of the latti e spa ing, and lB is the magneti length (Ali ea and Fisher, 2006, 2007; Goerbig et al.,2006; Wang et al., 2007)....
[...]
141 citations
"The electronic properties of graphe..." refers background in this paper
...The interband ex hangeenergy is redu ed in a bilayer (Nilsson et al., 2006 ), anda positive ontribution that depends logarithmi ally onthe bandwidth in graphene is absent in its bilayer....
[...]
...Furthermore, a ording to Hartree-Fo k al ulations, lean bilayer graphene is unstable towardsferromagnetism (Nilsson et al., 2006b).1....
[...]
...The same result, namely a ondu tan e of the order of e2/h, is obtained for disordered graphene bilayers where aself- onsistent al ulation leads to universal ondu tivityat the neutrality point (Katsnelson, 2007 ; Nilsson et al.,2006a, 2007a)....
[...]
...Higherorder orre tions to (227) lead to a rst order transitionat slightly higher densities (Nilsson et al., 2006 )....
[...]
...Hen e, even in a leansystem, the number of ondu ting hannels in the dire -tion perpendi ular to the layers vanishes at zero energy(Nilsson et al., 2006a, 2007a)....
[...]
140 citations
"The electronic properties of graphe..." refers background in this paper
...Fullerenes (C60) aremole ules onsisting of wrapped graphene by the introdu -tion of pentagons on the hexagonal latti e (Castro Neto et al.,2006a).1947) that found it to be a semimetal with unusual lin-early dispersing ele troni ex itations alled Dira ele -trons....
[...]
...When ele tron-hole symmetry is broken(t′ 6= 0) these states be ome dispersive with a Fermi ve-lo ity ve ≈ t′a (Castro Neto et al., 2006b).2....
[...]
...…by the fa t thatin graphene the Dira fermions move with a speed vFwhi h is 300 times smaller than the speed of light, c. Hen e, many of the unusual properties of QED an show up in graphene but at mu h smaller speeds(Castro Neto et al., 2006a; Katsnelson and Novoselov,2007; Katsnelson et al., 2006)....
[...]
...…of edge states(Areshkin and White, 2007; Gunly ke et al., 2007), lead-ing to Anderson lo alization, and anomalies inthe quantum Hall e e t (Castro Neto et al., 2006b;Martin and Blanter, 2007) as well as Coulomb blo k- 17 0 1 2 3 4 5 6 7 -1 0 1 e ne rg y / t 0 0.1 0.2 0.3 0.4 -0.2 0 0.2 0 1 2 3 4…...
[...]
...Edge states in graphene nanoribbons, just as the aseof arbon nanotubes, are predi ted to be Luttinger liq-uids, that is, intera ting one-dimensional ele tron sys-tems (Castro Neto et al., 2006b)....
[...]
138 citations
"The electronic properties of graphe..." refers background in this paper
...This result re-mains true even to higher order in perturbation theory(Mish henko, 2007) and is also obtained in large N ex-pansions (Rosenstein et al., 1989, 1991; Son, 2007) (N isthe number of avors of Dira fermions), with the onlymodi ation being the prefa tor in (220)....
[...]