Improved Electric Transport Properties of a Multi—wall carbon Nanotube |
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引用本文: | 李秋红,王太宏.Improved Electric Transport Properties of a Multi—wall carbon Nanotube[J].中国物理快报,2003,20(8):1333-1335. |
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作者姓名: | 李秋红 王太宏 |
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作者单位: | InstituteofPhysics,ChineseAcademyofSciences,Beijing100080 |
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摘 要: | Up to now quantized conductance of the carbon nanotube has only been observed by replacing the tip of a scanning probe microscope with the tube and putting the other end of the tube in a liquid metal Science 280 (1998) 1744]. Probably cleaning the tube by the liquid metal has improved its quality and gives rise to the quantized conductance. We report on a new method to improve the electric transport properties of a single multi-wall carbon nanotube by Joule heating. Our experiment indicates that the conductance of the tube can be greatly improved just by repeated scanning the bias voltage in vacuum.
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关 键 词: | 多层碳纳米管 电输运性质 量化电导系数 扫描探测显微镜 |
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