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24 April 2024

» arxiv » 0912.5258

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Differential Conductance Fluctuation of Curved Nanographite Sheets in the Mesoscopic Regime
Haomin Wang ; Catherine Choong ; Jun Zhang ; Kie Leong Teo ; Yihong Wu ;
Date:	29 Dec 2009
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.
Source:	arXiv, 0912.5258
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