Wang, Shidong and Grifoni, Milena and Roche, Stephan (2006) Anomalous diffusion and elastic mean free path in disorder-free multiwalled carbon nanotubes. PHYSICAL REVIEW B, 74 (12): 121407. ISSN 1098-0121,
Full text not available from this repository.Abstract
We explore the nature of anomalous conduction of wave packets in disorder-free incommensurate multiwalled 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 <=eta < 1. For large unit-cell mismatch between incommensurate shells, eta approaches the value 1/2 for diffusive motion. The energy-dependent quantum spreading reveals a complex density-of-states-dependent pattern with ballistic, superdiffusive, or diffusive character.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ELECTRONIC-STRUCTURE; QUANTUM DIFFUSION; SYSTEMS; TRANSPORT; CONDUCTANCE; CRYSTALS; TUBULES; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Grifoni > Group Milena Grifoni |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 03 Feb 2021 09:57 |
| Last Modified: | 03 Feb 2021 09:57 |
| URI: | https://pred.uni-regensburg.de/id/eprint/34140 |
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