Differential Conductance Fluctuation of Curved Nanographite Sheets in the Mesoscopic Regime

Details Differential Conductance Fluctuation of Curved Nanographite Sheets in the Mesoscopic Regime Differential Conductance Fluctuation of Curved Nanographite Sheets in the Mesoscopic Regime

2009-12-29

arxiv.org/abs/0912.5258v1

Solid State Comm. 145, 341-345, 2008

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

12 pages, 3 figures

Scientific paper

10.1016/j.ssc.2007.12.005

Excess conductance fluctuations with peculiar temperature-dependence from 1.4 to 250 K were observed in curved nano-graphite sheets with an electrode gap length of 300 and 450 nm, whereas the conductance fluctuation is greatly suppressed above 4.2 K when the electrode gap length increases to 800 and 1000 nm. The former is discussed in the context of the presence of a small energy bandgap in the nano-graphite sheets, while the latter is attributed to the crossover from coherent transport to diffusive transport regime.

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