,Electronic Band Structure of Carbon Nanotubes with Kekule Structure

• 作 者: Nguyen Ngoc Hieu Le Cong Nhan
• 机 构: Center of Research and Development, Duy Tan University, K7/25 Quang Trung, Da Nang, Viet Nam“,”Depar
• 出 处: 中国物理快报（英文版）
• 发表日期: 2013年9期

Electronic band structure of carbon nanotubes with the Kekule structure is studied by the tight-binding approximation.We give a complete geometrical approach to structural properties of carbon nanotubes with bond alteation,including chiral and achiral tubes.When the Kekule is introduced,all carbon nanotubes become semiconducting with a small band gap at the Fermi level.The band gap of the carbon nanotubes depends only on the difference between C-C bond lengths or the resonance integrals.