Electron transport through molecular bridge systems

Details Electron transport through molecular bridge systems Electron transport through molecular bridge systems

2009-07-26

arxiv.org/abs/0907.4480v2

Journal of Nanoscience and Nanotechnology, Volume 8, Number 8, August 2008, pp. 4096-4100(5)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages, 5 figures

Scientific paper

10.1166/jnn.2008.AN18

Electron transport characteristics are investigated through some molecular chains attached to two non-superconducting electrodes by the use of Green's function method. Here we do parametric calculations based on the tight-binding formulation to characterize the electron transport through such bridge systems. The transport properties are significantly influenced by (a) the length of the molecular chain and (b) the molecule-to-electrodes coupling strength and here we focus are results in these aspects. In this context we also discuss the steady state current fluctuations, the so-called shot noise, which is a consequence of the quantization of charge and is not directly available through conductance measurements.

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