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Title: Large negative differential resistance in a molecular junction of carbon nanotube and anthracene
Authors: Xu, Y.
Zhang, G.
Li, B. 
Issue Date: 25-Dec-2008
Citation: Xu, Y., Zhang, G., Li, B. (2008-12-25). Large negative differential resistance in a molecular junction of carbon nanotube and anthracene. Journal of Physical Chemistry B 112 (51) : 16891-16894. ScholarBank@NUS Repository.
Abstract: We propose a novel molecular junction with single walled carbon nanotube (SWNT) as electrodes bridged by an anthracene molecule. It is found that when the coupling between the molecule and the SWNT is noncovalent, the current-voltage (I-V) curve shows a striking nonlinear feature and a large negative differential resistance (NDR) at small bias. While in covalent adsorption site, the I- V curve behaves nearly linear. Theoretical studies based on the nonequilibrium Green's function method demonstrate that mechanism of the NDR is due to the narrow features of the local density of states (LDOS) of the SWNT as well as the alignment between the peak of LDOS of the electrodes and the molecular energy levels.© 2008 American Chemical Society.
Source Title: Journal of Physical Chemistry B
ISSN: 15206106
DOI: 10.1021/jp807175n
Appears in Collections:Staff Publications

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