Pressure-Induced Transition in Magnetoresistance of Single-Walled Carbon Nanotubes

Authors

J. Z. Cai, Chinese Academy of Sciences, China
L. Lu, Chinese Academy of Sciences, China
W. J. Kong, Chinese Academy of Sciences, China
H. W. Zhu, Louisiana State University, USA
C. Zhang, University of WollongongFollow
B. Q. Wei, Louisiana State University, USA
D. H. Wu, Tsinghua University, China
F. Liu, University of Utah, USA

Publication Details

This article was originally published as: Cai, JZ, Lu, L, Kong, WJ, et al, Pressure-Induced Transition in Magnetoresistance of Single-Walled Carbon Nanotubes, Physical Review Letters, 2006, 97(2), 026402. Copyright 2006 American Physical Society. The original journal can be found here.

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 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.