Low-energy electronic states of carbon nanocones in an electric field

Jun-Liang Chen; Ming-Horng Su; Chi-Chuan Hwang; Jian-Ming Lu; Chia-Chang Tasi

doi:10.1007/BF03353629

Issue

Vol. 2 No. 2 (2010)

Issue Published : Apr 1, 2010

Low-energy electronic states of carbon nanocones in an electric field

https://doi.org/10.1007/BF03353629

Jun-Liang Chen

Department of Mechanical Engineering, WuFeng Institute of Technology, Chiayi 621, Taiwan

Ming-Horng Su

Department of Fire Science, WuFeng Institute of Technology

Chi-Chuan Hwang

Department of Engineering Science, National Cheng Kung University, Tainan 70101, Taiwan

Jian-Ming Lu

Advanced Networking Business Unit, National Center for High-Performance Computing, National Applied Research Laboratories

Chia-Chang Tasi

Institute of Atomic and Molecular Sciences, Academia Sinica

Corresponding Author: Chi-Chuan Hwang

chchwang@mail.ncku.edu.tw

Nano-Micro Letters, Vol. 2 No. 2 (2010), Article Number: 121-125
Article Published : Jul 6, 2010

Abstract

The low-energy electronic states and energy gaps of carbon nanocones in an electric field are studied using a single-π-band tight-binding model. The analysis considers five perfect carbon nanocones with disclination angles of 60°, 120°, 180°, 240° and 300°, respectively. The numerical results reveal that the low-energy electronic states and energy gaps of a carbon nanocones are highly sensitive to its geometric shape (i.e. the disclination angle and height), and to the direction and magnitude of an electric field. The electric field causes a strong modulation of the state energies and energy gaps of the nanocones, changes their Fermi levels, and induces zero-gap transitions. The energy-gap modulation effect becomes particularly pronounced at higher strength of the applied electric field, and is strongly related to the geometric structure of the nanocone.

Keywords

Low-energy electronic states Carbon Nanocones Electric field

Chen, Jun-Liang, Ming-Horng Su, Chi-Chuan Hwang, Jian-Ming Lu, and Chia-Chang Tasi. 2010. “Low-Energy Electronic States of Carbon Nanocones in an Electric Field”. Nano-Micro Letters 2 (2):121-25. https://doi.org/10.1007/BF03353629.

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M. Ge and K. Sattler, Chem. Phys. Lett. 220, 192 (1994). doi:10.1016/0009-2614(94)00167-7.

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