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Electronic properties of the metallic zigzag single‐walled carbon nanotube ropes
Author(s) -
Chen Jiangwei,
Wan Xiangang,
Dong Jinming
Publication year - 2003
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200301631
Subject(s) - zigzag , rope , carbon nanotube , materials science , pseudogap , fermi level , radius , tight binding , electronic structure , metal , nanotube , condensed matter physics , electron , nanotechnology , physics , doping , structural engineering , optoelectronics , geometry , cuprate , mathematics , quantum mechanics , computer security , computer science , engineering , metallurgy
Using Slater–Koster tight‐binding calculations, we found that, due to the coexistence of the π–σ electron hybridization and the inter‐tube interactions, the electronic properties of the rope formed by small‐radius metallic zigzag single‐walled carbon nanotubes (SWNTs) have some unique characters: for the rope formed by (9,0) SWNTs, its electronic properties near the Fermi level are mainly affected by the π–σ electron hybridization; and for the rope formed by (12,0) SWNTs, both factors affect the electronic properties significantly. With increasing SWNT radius, the effect of the π–σ electron hybridization decreases quickly. Finally, boundary effects of the finite sized rope have also been investigated, which reduce the pseudogap generally.