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.
Article Details
Journal Info
Journal of Applied Physics
American Institute of Physics
Authors (4)
Wenzhuo Huang
State Key Laboratory of Surface Physics and Department of Physics, Fudan University 1 , Shanghai 200433,
Jun Zhong
Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices
Weidong Sheng
State Key Laboratory of Surface Physics and Department of Physics, Fudan University 1 , Shanghai 200433,
Aiping Zhou
National Cancer Center, National Clinical Research Center for Cancer, and Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing