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arXiv · 0912.5258

Differential Conductance Fluctuation of Curved Nanographite Sheets in the Mesoscopic Regime

Haomin Wang·Catherine Choong·Jun Zhang·Kie Leong Teo·Yihong Wu
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Abstract

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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Haomin Wang, Catherine Choong, Jun Zhang, Kie Leong Teo, Yihong Wu. 2009-12-29. Differential Conductance Fluctuation of Curved Nanographite Sheets in the Mesoscopic Regime. https://doi.org/10.1016/j.ssc.2007.12.005

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