Tight-binding description of graphene -: art. no. 035412

被引：791
|
作者：
Reich, S
Maultzsch, J
Thomsen, C
Ordejón, P
机构：
[1] Tech Univ Berlin, Inst Festkorperphys, D-10623 Berlin, Germany
[2] CSIC, Inst Ciencia Mat Barcelona, E-08193 Barcelona, Spain
来源：
PHYSICAL REVIEW B | 2002年 / 66卷 / 03期
关键词：
D O I：
10.1103/PhysRevB.66.035412
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We investigate the tight-binding approximation for the dispersion of the pi and pi* electronic bands in graphene and carbon nanotubes. The nearest-neighbor tight-binding approximation with a fixed gamma(0) applies only to a very limited range of wave vectors. We derive an analytic expression for the tight-binding dispersion including up to third-nearest neighbors. Interaction with more distant neighbors qualitatively improves the tight-binding picture, as we show for graphene and three selected carbon nanotubes.
引用
收藏
页码：354121 / 354125
页数：5
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