Tunable graphene system with two decoupled monolayers

Schmidt, H. and Luedtke, T. and Barthold, P. and McCann, E. and Falko, Vladimir and Haug, R. J. (2008) Tunable graphene system with two decoupled monolayers. Applied Physics Letters, 93 (17): 172108. ISSN 1077-3118

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The use of two truly two-dimensional gapless semiconductors, monolayer and bilayer graphene, as current-carrying components in field-effect transistors (FET) gives access to new types of nanoelectronic devices. Here, we report on the development of graphene-based FETs containing two decoupled graphene monolayers manufactured from a single one folded during the exfoliation process. The transport characteristics of these newly-developed devices differ markedly from those manufactured from a single-crystal bilayer. By analyzing Shubnikov-de Haas oscillations, we demonstrate the possibility to independently control the carrier densities in both layers using top and bottom gates, despite there being only a nanometer scale separation between them.

Item Type:
Journal Article
Journal or Publication Title:
Applied Physics Letters
Uncontrolled Keywords:
?? carboncarrier densityelemental semiconductorsfield effect transistorsmonolayersnanoelectronicsnanostructured materialsshubnikov-de haas effectphysics and astronomy (miscellaneous) ??
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Deposited On:
07 Dec 2009 10:22
Last Modified:
15 Jul 2024 10:39