An exact diagonalization approach to the electronic structure of quasi-one-dimensional systems
Abstract
An exact diagonalization approach is developed to solve the extended Hubbard model in momentum space, aiming to investigate the electronic and optical properties of quasi-one-dimensional systems. By taking only a small number of k-points, with appropriate parameterization, our method is able to capture the low-energy excitation spectra of graphene nanoribbons, reproduce the essential features of the GW-BSE calculations, and give rise to a result closely aligned with the experiment.
Fields of Study & Subjects
Graphene research and applications
Advanced Chemical Physics Studies
Physics of Superconductivity and Magnetism
Publication details
- Journal / source
- Journal of Applied Physics
- Volume
- 139
- Issue
- 5
- Publication date
- 5 February 2026
- Language
- EN