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Structural and electronic properties of defect and intramolecular junctions for single‐walled carbon nanotube
Author(s) -
Liu Hong,
Chen Jiangwei,
Yang Huatong
Publication year - 2004
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.200301906
Subject(s) - conductance , carbon nanotube , intramolecular force , materials science , heterojunction , semiconductor , metal , condensed matter physics , electronic structure , nanotube , nanotechnology , local density of states , optoelectronics , chemistry , physics , stereochemistry , metallurgy
The influences of different distributions of defects in (5, 5) single‐walled carbon nanotube (SWCNT) on the electronic structure of SWCNT are considered. Furthermore, we suggest one way to connect two perfect semi‐infinite tubes with different chiralities, such as four different (5, 5)/( n , 0) ( n = 8, 9, 10) intramolecular junctions. Their electronic local density of states (LDOS) and quantum conductance are studied. It is found that the conductance gap of the metal/semiconductor heterojunction is not determined only by the electronic structure of semiconductor tube, and the defect distribution mainly change the step behavior of conductance, which is particularly obvious in (5, 5)/(9, 0) metal/metal junctions. (© 2003 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)