Magnetoresistance of Multiwalled Carbon Nanotube Yarns |
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| Authors: | SHENG Lei-Mei GAO Wei CAO Shi-Xun ZHANG Jin-Cang |
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| Affiliation: | Department of Physics, Shanghai University, Shanghai 200444 |
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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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