Physics – Nuclear Physics
Scientific paper
Apr 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..561..214s&link_type=abstract
TOURS SYMPOSIUM ON NUCLEAR PHYSICS IV: TOURS 2000. AIP Conference Proceedings, Volume 561, pp. 214-222 (2001).
Physics
Nuclear Physics
1
Electronic Structure Of Nanoscale Materials: Clusters, Nanoparticles, Nanotubes, And Nanocrystals
Scientific paper
The electronic transport properties of nanotube-based materials obtained by the theoretical band-structure study are reviewed. Although fullerenes and nanotubes consist of only one element, carbon, they show rich electronic properties depending on their network topology and the details of the interunit interaction. In the case of metallic carbon nanotubes, the intertube interaction in its crystalline bundle phase can significantly alter the electron transport properties by opening the pseudogap at the Fermi level. Also their conducting behavior can be altered by doping. The K-doped metallic (10,10) nanotube lattice K2C80 shows a rather simple upward shift of the Fermi level without modifying the band dispersion upon doping. Since the Fermi level goes above the second conduction-band minimum and the density of states at the Fermi level becomes much larger, K2C80 should show much better conductivity than the pristine phase. Finally, the importance of the nearly free electron states being present in nanotube-based materials is discussed. .
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