Journal
SOLID STATE COMMUNICATIONS
Volume 145, Issue 7-8, Pages 341-345Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ssc.2007.12.005
Keywords
nanographite sheets; electron transport; differential conductance fluctuations
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Excess conductance fluctuations with peculiar temperature dependence from 1.4 to 250 K were observed in curved nanographite sheets with electrode gap lengths of 300 and 450 mm, whereas the conductance fluctuation is greatly suppressed above 4.2 K when the electrode gap lengths increase to 800 and 1000 nm. The former is discussed in the context of the presence of a small energy bandgap in the nanographite sheets, while the latter is attributed to the crossover from the coherent transport to diffusive transport regime. (C) 2007 Elsevier Ltd. All rights reserved.
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