1. Tunable graphene system with two decoupled monolayers
- Author
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P. Barthold, Hennrik Schmidt, T. Luedtke, Vladimir I. Fal'ko, Edward McCann, and Rolf J. Haug
- Subjects
Transport characteristics ,Physics and Astronomy (miscellaneous) ,FOS: Physical sciences ,Field effect transistors ,Transistors ,Bottom gates ,In fields ,law.invention ,Gapless playback ,law ,Monolayer ,Mesoscale and Nanoscale Physics (cond-mat.mes-hall) ,ddc:530 ,Electron energy levels ,Joints (structural components) ,Physics ,Monolayers ,Semi-conductors ,Carrier densities ,Condensed Matter - Mesoscale and Nanoscale Physics ,business.industry ,Graphene ,Bilayer ,Transistor ,Bi layers ,Exfoliation processes ,Nanometer scales ,Exfoliation joint ,Semiconductor ,Bilayer graphene ,Optoelectronics ,MESFET devices ,Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik ,business ,Nanoelectronic devices - Abstract
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 nano-meter scale separation between them., Comment: 4 Pages, 4 Fugures
- Published
- 2008