ELECTRONIC STRUCTURE OF GRAPHENE NANORIBBONS SUBJECTED TO TWIST AND NONUNIFORM STRAINGraphene nanoribbons exhibit band gap modulation when subjected to strain. While band gap creation has been theoretically investigated for uniaxial strains, other deformations such as nanoribbon twist have not been considered...
the eigenvalue of H is the dispersion relation(or band structure) of graphene. we easily get: \epsilon_{\pm}=\pm |t|\sqrt{3+2cos(\sqrt3 k_x a)+4cos(\frac{\sqrt3}{2}k_x a)cos(\frac{3}{2}k_ya)} where plus and minus sign label two different band. Calculate energy in...
Department of Energy's Lawrence Berkeley National Laboratory have discovered striking new details about the electronic structure of graphene, crystalline sheets of carbon just one atom thick. An international team led by Aaron Bostwick and Eli Rotenberg of the ALS found that composite particles called...
C. Bilayer graphene: Tight-binding approach 118 D. Epitaxial graphene 119 E. Graphene stacks 120 1. Electronic structure of bulk graphite 121 F. Surface states in graphene 122 G. Surface states in graphene stacks 124 H. The spectrum of graphene nanoribbons 124 1. Zigzag nanoribbons 125 2. A...
The Fermi velocity is reduced in the vicinity area of the defect due to the enhanced scattering. 展开 关键词: ab initio calculations Fermi surface graphene point defect scattering scanning tunnelling microscopy surface states Methods of electronic structure calculations Fermi surface: calculations and ...
Using density functional theory calculations we investigate the electronic structure of graphene doped by deposition of foreign atoms. We demonstrate that, as the charge transfer to the graphene layer increases, the band structure of the pristine graphene sheet is substantially affected. This is particul...
Researchers have used a specially crafted electric potential to manipulate the electronic band structure of graphene, laying the groundwork for on-demand electronic band design. Scientists have long been trying to tune the electronic band structures o
The electronic structure for graphene monolayer tubules is predicted as a function of the diameter and helicity of the constituent graphene tubules. The calculated results show that approximately 1/3 of these tubules are a oneヾimensional metal which is stable against a Peierls distortion, and the...
Electronic-Structure of Chiral Graphene Tubules The electronic structure for graphene monolayer tubules is predicted as a function of the diameter and helicity of the constituent graphene tubules. The ca... R Saito,M Fujita,G Dresselhaus,... - 《Applied Physics Letters》 被引量: 3421发表: 1992...
In this paper we performed first-principles calculations to study the electronic structure of non-twisted and twisted bilayers of hybrid graphene/MoS2 (Gr/MoS2) and MoS2/MoS2. Both twisted bilayers of Gr/MoS2 and MoS2/MoS2 show significant differences in band structures from the non-twisted ones...