Quantum transport through short semiconducting nanotubes: A complex band structure analysis

Physical Review B - Condensed Matter and Materials Physics

Volumn 70, Issue 11, 2004, Pages

  Pomorski, Pawel ^a   Roland, Christopher ^a   Guo, Hong ^b  

^a NORTH CAROLINA STATE UNIVERSITY   (United States)

^b MCGILL UNIVERSITY   (Canada)

Author keywords

[No Author keywords available]

Indexed keywords

METAL DERIVATIVE;

ARTICLE; CALCULATION; COMPLEX FORMATION; MOLECULAR MODEL; NANOTUBE; QUANTUM MECHANICS; SEMICONDUCTOR; STRUCTURE ANALYSIS;

EID: 19744382049     PISSN: 01631829     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevB.70.115408     Document Type: Article

References (32)

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31. The results in Ref. 27 suggest that a nanotube at least 5 nm in length would be necessary to achieve the required translational invariance of the potential profile in the middle of the tube. We are currently precluded from performing such a calculation due to the large computational costs associated with the sophisticated model we use.
32. We also note that we have explicitly calculated the contribution of the evanescent modes to the transmission for selected small-diameter metallic tubes. The complex band structure analysis shows that, in contrast to the semiconducting tubes, in metallic tubes the evanescent modes have a very short decay length and make a negligible contribution to T(E).