Anomalous diffusion and elastic mean free path in disorder-free multi-walled carbon nanotubes

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dc.creatorWang, Shidong
dc.creatorGrifoni, Milena
dc.creatorRoche, Stephan
dc.date2006-03-15
dc.date.accessioned2026-07-07T07:49:57Z
dc.date.available2026-07-07T07:49:57Z
dc.descriptionWe explore the nature of anomalous diffusion of wave packets in disorder-free incommensurate multi-walled carbon nanotubes. The spectrum-averaged diffusion exponent is obtained by calculating the multifractal dimension of the energy spectrum. Depending on the shell chirality, the exponent is found to lie within the range $1/2 \leq η< 1$. For large unit cell mismatch between incommensurate shells, $η$ approaches the value 1/2 for diffusive motion. The energy-dependent quantum spreading reveals a complex density-of-states-dependent pattern with ballistic, super-diffusive or diffusive character.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0603399
dc.identifierhttp://arxiv.org/abs/cond-mat/0603399
dc.identifierPhys. Rev. B 74, 121407(R) (2006)
dc.identifierdoi:10.1103/PhysRevB.74.121407
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/125013
dc.subjectMesoscale and Nanoscale Physics
dc.titleAnomalous diffusion and elastic mean free path in disorder-free multi-walled carbon nanotubes
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