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Anderson localization in carbon nanotubes: Defect density and temperature effects

AuthorsBiel, Blanca; García-Vidal, F. J.; Rubio, Angel; Flores, Fernando
Issue Date2005
PublisherAmerican Physical Society
CitationPhysical Review Letters 95: 266801 (2005)
AbstractThe role of irradiation induced defects and temperature in the conducting properties of single-walled (10,10) carbon nanotubes has been analyzed by means of a first-principles approach. We find that divacancies modify strongly the energy dependence of the differential conductance, reducing also the number of contributing channels from two (ideal) to one. A small number of divacancies (5-9) brings up strong Anderson localization effects and a seemly universal curve for the resistance as a function of the number of defects. It is also shown that low temperatures, about 15-65 K, are enough to smooth out the fluctuations of the conductance without destroying the exponential dependence of the resistivity as a function of the tube length. © 2005 The American Physical Society.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevLett.95.266801
Identifiersdoi: 10.1103/PhysRevLett.95.266801
issn: 0031-9007
e-issn: 1079-7114
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