Differential conductance fluctuation of curved nanographite sheets in the mesoscopic regime

被引：4

作者：

Wang, Haornin ^{[1
,2
]}

Choong, Catherine ^{[1
,2
]}

Zhang, Jun ^{[2
]}

Teo, Kie Leong ^{[1
]}

Wu, Yihong ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117576, Singapore

[2] Data Storage Inst, Singapore 117608, Singapore

来源：

SOLID STATE COMMUNICATIONS | 2008年 / 145卷 / 7-8期

关键词：

nanographite sheets; electron transport; differential conductance fluctuations;

D O I：

10.1016/j.ssc.2007.12.005

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

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.

引用

页码：341 / 345

页数：5

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