TY - JOUR
T1 - Localization and quantization in covalently bonded carbon nanotube junctions
AU - Cleri, Fabrizio
AU - Keblinski, Pawel
AU - Jang, Inkook
AU - Sinnott, Susan S.
PY - 2004/3/25
Y1 - 2004/3/25
N2 - UA tight-binding Hamiltonian is used to study the electronic properties of covalently bonded, crossed (5,5) metallic nanotubes with an increasing degree of disorder in the junction region. Ideal junctions with a few topological defects show Ohmic behavior. Upon increasing disorder, Ohmic conduction is suppressed in favor of hopping conductivity. Strongly disordered junctions as could be obtained after electron-beam irradiation of overlayed nanotubes, display weak localization and energy quantization, indicating the formation of a quantum dot contacted to metallic nanowires by tunnel barriers.
AB - UA tight-binding Hamiltonian is used to study the electronic properties of covalently bonded, crossed (5,5) metallic nanotubes with an increasing degree of disorder in the junction region. Ideal junctions with a few topological defects show Ohmic behavior. Upon increasing disorder, Ohmic conduction is suppressed in favor of hopping conductivity. Strongly disordered junctions as could be obtained after electron-beam irradiation of overlayed nanotubes, display weak localization and energy quantization, indicating the formation of a quantum dot contacted to metallic nanowires by tunnel barriers.
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U2 - 10.1103/PhysRevB.69.121412
DO - 10.1103/PhysRevB.69.121412
M3 - Article
AN - SCOPUS:2342427226
SN - 1098-0121
VL - 69
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
IS - 12
ER -