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Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/6032
Title: Conductance spectra of metallic carbon nanotube bundles from first principles
Authors: Ren, Wei
Chan, Che-Ting
Cho, T. H.
Leung, T. C.
Wang, Jian
Guo, Hong
Sheng, Ping
Keywords: Ab initio calculations
Band structure
Carbon nanotubes
Electrical conductivity
Fermi level
Integrated circuit interconnections
Total energy
Issue Date: 4-Nov-2008
Citation: Physical review B, v. 78, iss. 19, p. 195404, 2008
Abstract: We report a first-principles analysis of electronic transport characteristics for (n,n) carbon nanotube bundles. When n is not a multiple of 3, intertube coupling causes universal conductance suppression near Fermi level regardless of the rotational arrangement of individual tubes. However, when n is a multiple of 3, the bundles exhibit a diversified conductance dependence on the orientation details of the constituent tubes. The total energy of the bundle is also sensitive to the orientation arrangement only when n is a multiple of 3. All the transport properties and band structures can be well understood from the symmetry consideration of whether the rotational symmetry of the individual tubes is commensurate with that of the bundle. This finding may shed some light on understanding and applications of nanotube bundle interconnect technology.
Rights: Physical Review B © copyright 2008 American Physical Society. The journal's web site is located at http://prb.aps.org
URI: http://hdl.handle.net/1783.1/6032
Appears in Collections:PHYS Journal/Magazine Articles

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