Quantum charge transport in Mo$_{6}$S$_{3}$I$_{6}$ molecular wire circuits

Details Quantum charge transport in Mo$_{6}$S$_{3}$I$_{6}$ molecular wire circuits Quantum charge transport in Mo$_{6}$S$_{3}$I$_{6}$ molecular wire circuits

2009-05-06

arxiv.org/abs/0905.0926v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 8 figures

Scientific paper

Charge transport measurements on flexible Mo$_{6}$S$_{3}$I$_{6}$ (MoSI) nanowires with different diameters in highly imperfect 2-terminal circuits reveal systematic power law behaviour of the conductivity $\sigma(T,V)$ as a function of temperature and voltage. On the basis of measurements on a number of circuits we conclude that the behaviour in \emph{thin} wires can be most convincingly described by tunneling through Tomonaga-Luttinger liquid (TLL) segments of MoSI wire, which is in some cases modified by environmental Coulomb blockade (ECB). The latter are proposed to arise from deformations or imperfections of the MoSI wires, which - in combination with their recognitive terminal sulfur-based connectivity properties - might be useful for creating sub-nanometer scale interconnects as well as non-linear elements for molecular electronics.

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