| 曲率效应对金属碳纳米管局域化长度的影响 |
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| 引用本文： | 韩梅,张勇,黄成平. 曲率效应对金属碳纳米管局域化长度的影响[J]. 四川大学学报(自然科学版), 2010, 47(1): 128-132. DOI: 10.3969/j.issn.0490-6756.2010.01.025 |
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| 作者姓名： | 韩梅 张勇 黄成平 |
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| 作者单位： | 南京工业大学应用物理系,南京,210009 |
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| 基金项目： | 国家自然科学基金，国家自然科学基金 |
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| 摘 要： | 基于π轨道紧束缚模型,并考虑曲率效应的影响,解析地推导了金属(即扶手椅型)碳纳米管的局域化长度.发现,考虑曲率效应后,扶手椅型碳纳米管的局域化长度变长;还发现,曲率效应对扶手椅型碳纳米管局域化长度的影响随碳纳米管的半径的增加而迅速减小.
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| 关 键 词： | 碳纳米管 局域化长度 曲率效应 |
Curvature effect on localization length in metallic carbon nanotubes |
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| HAN Mei,ZHANG Yong,HUANG Cheng-Ping. Curvature effect on localization length in metallic carbon nanotubes[J]. Journal of Sichuan University (Natural Science Edition), 2010, 47(1): 128-132. DOI: 10.3969/j.issn.0490-6756.2010.01.025 |
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| Authors: | HAN Mei ZHANG Yong HUANG Cheng-Ping |
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| Affiliation: | Department of Applied Physics, Nanjing University of Technology;Department of Applied Physics, Nanjing University of Technology;Department of Applied Physics, Nanjing University of Technology |
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| Abstract: | . Based on π orbital tight-binding model and including the curvature effect, the localization length of the metallic carbon nanotubes, i.e. the armchair carbon nanotubes, has been derived analyti-cally. It is found that, including the curvature effect, the localization length of armchair nanotubes be-comes longer. It is also found that the curvature effect on localization length decreases with increasing radius of carbon nanotube. |
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| Keywords: | carbon nanotubes localization length curvature effect |
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