Abstract
The effects of electron-electron interaction on properties of zigzag carbon nanotubes with caps at both ends are theoretically investigated by employing an extended Peierls-Hubbard model. The electron-electron interaction is treated within the frame of Hartree-Fock approximation. Then the electronic structures and optical properties of zigzag nanotubes with and without the electron-electron interaction are investigated. Furthermore, we also study the dependence of its electronic and optical properties on its length.
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