## 摘要

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.

原文 | English |
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頁（從 - 到） | 121-125 |

頁數 | 5 |

期刊 | Nano-Micro Letters |

卷 | 2 |

發行號 | 2 |

DOIs | |

出版狀態 | Published - 2010 |

## All Science Journal Classification (ASJC) codes

- 電子、光磁材料
- 表面、塗料和薄膜
- 電氣與電子工程