Conductance of a Conjugated Molecule with Carbon Nanotube Contacts

Details Conductance of a Conjugated Molecule with Carbon Nanotube Contacts Conductance of a Conjugated Molecule with Carbon Nanotube Contacts

2008-06-17

arxiv.org/abs/0806.2851v1

Physics

Condensed Matter

Other Condensed Matter

15 Pages, 4 figures, 1 table

Scientific paper

Calculations of the conductance of a carbon nanotube (CNT)-molecule-CNT structure are in agreement with experimental measurements [1]. The features in the transmission correspond directly to the features of the isolated molecular orbitals. The HOMO provides conductance at low bias that is relatively insensitive to the end groups of the cut CNTs, the cut angle, or the number of molecular bridges. A molecular conformation change not directly in the path of the carrier transport increases the resistance by over 2 orders of magnitude. [1] X. Guo, J. P. Small, J. E. Klare, Y. Wang, M. S. Purewal, I. W. Tam, B. H. Hong, R. Caldwell, L. Huang, S. O'Brien, et al., Science 311, 356 (2006), URL http://www.sciencemag.org/cgi/content/abstract/311/5759/356

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