Year: 2012
Type: article
Abstract: In this paper energy bands and Berry curvature of graphene was studied.Desired Hamiltonian regarding the next-nearest neighbors was obtained by tight-binding model.By using the second quantization approach, the transformation matrix is calculated and the Hamiltonian of system is diagonalized.With this Hamiltonian, the band structure and wave function can be calculated.By using calculated wave function the Berry connection and Berry curvature of our system are calculated.Our results are exactly consistent with previous methods and also the Berry curvature throughout the Brillouin zone get zero.
Source: Acta Physica Polonica A
Authors: T. Farajollahpour, A.H. Rezvani, M.R. Khodarahmi, M. Arasteh
Institution: University of Tehran
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W971449979