Phys. Rev. Lett. 84, 4441–4444 (2000)Electrical Transport in Rings of Single-Wall Nanotubes: One-Dimensional LocalizationReceived 14 April 1999; published in the issue dated 8 May 2000 We report low-temperature magnetoresistance (MR) measurements on rings of single-wall carbon nanotubes. Negative MR characteristic of weak one-dimensional localization is clearly observed from 3.0 to 60 K, and the coherence length Lϕ is obtained as a function of temperature. The dominant dephasing mechanism is identified as electron-electron scattering. Below 1 K, we observe a transition from weak to strong localization, and below 0.7 K a weak antilocalization is induced by spin-orbit scattering. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.84.4441
DOI:
10.1103/PhysRevLett.84.4441
PACS:
73.61.Wp, 61.48.+c, 72.15.Rn, 73.50.-h
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