Pressure-induced transition in magnetoresistance of single-walled carbon nanotubes |
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Authors: | Cai J Z Lu L Kong W J Zhu H W Zhang C Wei B Q Wu D H Liu Feng |
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Institution: | Institute of Physics, Chinese Academy of Sciences, Beijing 10080, China. |
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Abstract: | We applied hydrostatic pressure (up to 10 GPa) to single-walled carbon nanotube bundles at low temperature (down to 2 K) to measure their magnetoresistance (MR) in a field up to 12 T. We found a pressure-induced transition in MR from positive to negative in the high-field regime. The onset of the transition occurs at approximately 1.5 GPa, which correlates closely with the tube shape transitions. The characteristics of the high-pressure MR are consistent with a model of pressure-induced two-dimensional weak localization. |
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