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Weak localization and dimensional crossover in carbon nanotube systems

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Abstract

We investigate the effects of magnetic and electric fields on electron wavefunction interactions in single walled carbon nanotube bundles. The magnetoresistance measurements performed at 4.2 K and the dependence of the data upon the electric field reveal good agreement with weak localization theory. An electrical field conditioned characteristic length is associated to ohmic-non ohmic transition, observed below 85 K, in current voltage characteristics. This length results equal to the average bundles diameter just at T ≅ 85 K, indicating that 2D–3D crossover is responsible for the observed conductance transition.

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Authors and Affiliations

  1. Dipartimento di Fisica and MINAS Laboratory, Università di Roma “Tor Vergata”, 00133, Roma, Italy

    M. Salvato, M. Lucci, I. Ottaviani & M. Cirillo

  2. Dipartimento di Scienze e Tecnologie Chimiche and MINAS Laboratory, Università di Roma “Tor Vergata”, 00133, Roma, Italy

    S. Orlanducci, F. Toschi & M. L. Terranova

Authors
  1. M. Salvato
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  2. M. Lucci
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  3. I. Ottaviani
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  4. M. Cirillo
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  5. S. Orlanducci
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  6. F. Toschi
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  7. M. L. Terranova
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Correspondence to M. Cirillo.

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Salvato, M., Lucci, M., Ottaviani, I. et al. Weak localization and dimensional crossover in carbon nanotube systems. Eur. Phys. J. B 85, 109 (2012). https://doi.org/10.1140/epjb/e2012-20635-0

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  • DOI: https://doi.org/10.1140/epjb/e2012-20635-0

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