Electrical transport in rings of single-wall nanotubes: one- dimensional localization

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..


Published in:
PHYSICAL REVIEW LETTERS, 84, 19, 4441-4444
Year:
2000
Laboratories:




 Record created 2010-02-04, last modified 2018-03-17


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