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Magnetoresistance of Multiwalled Carbon Nanotube Yarns |
| SHENG Lei-Mei, GAO Wei, CAO Shi-Xun, ZHANG Jin-Cang |
| Department of Physics, Shanghai University, Shanghai 200444 |
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| Cite this article: |
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SHENG Lei-Mei, GAO Wei, CAO Shi-Xun et al 2008 Chin. Phys. Lett. 25 3397-3399 |
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Abstract We measure zero-field resistivity and magnetoresistance of multiwalled carbon nanotube yarns (CNTYs). The CNTYs are drawn from superaligned multiwalled carbon nanotube arrays synthesized by the low-pressure chemical vapour deposition method. The zero-field resistivity shows a logarithmic decrease from 2K to 300K. In the presence of a magnetic field applied perpendicular to the yarn axis, a pronounced negative magnetoresistance is observed. A magnetoresistance ratio of 22% is obtained. These behaviours can be explained by the weak localization effect.
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| Keywords:
73.63.Fg
72.15.Gd
72.15.Rn
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Received: 16 April 2008
Published: 29 August 2008
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| PACS: |
73.63.Fg
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(Nanotubes)
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72.15.Gd
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(Galvanomagnetic and other magnetotransport effects)
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72.15.Rn
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(Localization effects (Anderson or weak localization))
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