| 多壁碳纳米管的太赫兹电磁场响应 |
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| 引用本文： | 廖文虎,郭俊吉.多壁碳纳米管的太赫兹电磁场响应[J].吉首大学学报(自然科学版),2013,34(1):37-41. |
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| 作者姓名： | 廖文虎 郭俊吉 |
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| 作者单位： | (吉首大学物理与机电工程学院，湖南 吉首 416000) |
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| 基金项目： | 国家自然科学基金资助项目(11264013);湖南省自然科学基金资助项目(12JJ4003);吉首大学博士启动基金资助项目(jsdxkyzz201005) |
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| 摘 要： | 采用Floquet散射方法，探讨外加太赫兹高频电磁场辐照下多壁碳纳米管的电子能态密度和重整化电阻.研究发现，在外场辐照场频率一定时，系统电子能态密度随着外场强度的增强先振荡上升后振荡下降，重整化电阻先迅速下降后振荡上升；当外场辐照场强度一定时，系统电子能态密度随着外场频率的增加先迅速上升至某一饱和值，然后缓慢振荡下降，重整化电阻先急剧下降至0.10，附近然后缓慢振荡上升.
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| 关 键 词： | 多壁碳纳米管 Floquet散射方法 太赫兹电磁场 电子态密度 重整化电阻 |
Terahertz Electromagnetic Field Response of Multiwall Carbon Nanotubes |
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| LIAO Wen-hu
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GUO Jun-ji.Terahertz Electromagnetic Field Response of Multiwall Carbon Nanotubes[J].Journal of Jishou University(Natural Science Edition),2013,34(1):37-41. |
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| Authors: | LIAO Wen-hu GUO Jun-ji |
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| Institution: | (College of Physics and Mechanical & Electrical Engineering,Jishou University,Jishou 416000,Hunan China) |
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| Abstract: | Utilizing Floquet scattering method,the paper investigates the electronic density of states (DOS) and renormalized resistance of multiwall carbon nanotubes under the irradiation of the terahertz electromagnetic fields.With the irradiation frequency of the external field remaining unchanged,the system DOS is observed to increase at first and then decrease oscillately,while the renormalized resistance of the system firstly decreases rapidly and then increases osicllately with the increasing irradiation intensity.On the other hand,the situation for the unchanged irradiation intensities is some what different,the system DOS increases quickly to a saturation value and then decreases oscillately and slowly,the renormalized resistance decreases urgently to be nearly 0.10 and then increases slowly. |
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| Keywords: | multiwall carbon nanotubes Floquet scattering method terahertz electromagnetic field electron density of states renormalized resistance |
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