Size related transport mechanisms in hybrid metal-polymer nanowires.

Gence, Loïk;Callegari, Vincent;Faniel, Sébastien;Vlad, Alexandru;Bayot, Vincent;et.al.
(2008) 8th International Conference on Trends in Nanotechnology (TNT2007) — Location: San Sebastian (Spain) (3.September.2007)

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Abstract
Electrical transport data for hybrid metal-polypyrrole nanowires of various diameters are presented and analyzed. Measurements were performed on both multiple nanowires embedded within polycarbonate templates - and single nanowires down to low temperature T = 4 K. All samples exhibit symmetrical and linear current-voltage (I-V) characteristics at room temperature. Below 77 K, all samples with diameters above 40 nm present nonlinear I-V characteristics and a zero-current plateau at 4 K. The three-dimensional Mott variable-range-hopping model provides a complete framework for the understanding of their behavior. In contrast, the transport mechanism changes for the 40 nm nanowire samples which exhibit power-law T-dependence of the resistance, indicative of the critical regime of disorder-induced metal-insulator transitions. (C) 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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Gence, L., Callegari, V., Faniel, S., Vlad, A., Dutu, C. A., Melinte, S., Demoustier, S., & Bayot, V. (2008). Size related transport mechanisms in hybrid metal-polymer nanowires. Physica Status Solidi. A: Applications and Materials Science (Print), 205(6), 1447-1450. https://doi.org/10.1002/pssa.200778139 (Original work published 2008)