title: Pressure-induced transition in magnetoresistance of single-walled carbon nanotubes.
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.
authors.affiliation: Institute of Physics, Chinese Academy of Sciences, Beijing 10080, China.
authors.forename: J Z
authors.initials: JZ
authors.lastname: Cai
authors.forename: L
authors.initials: L
authors.lastname: Lu
authors.forename: W J
authors.initials: WJ
authors.lastname: Kong
authors.forename: H W
authors.initials: HW
authors.lastname: Zhu
authors.forename: C
authors.initials: C
authors.lastname: Zhang
authors.forename: B Q
authors.initials: BQ
authors.lastname: Wei
authors.forename: D H
authors.initials: DH
authors.lastname: Wu
authors.forename: Feng
authors.initials: F
authors.lastname: Liu