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Fabrication of ballistic suspended graphene with local-gating

Maurand, Romain and Rickhaus, Peter and Makk, Peter and Hess, Samuel and Tovari, Endre and Handschin, Clevin and Weiss, Markus and Schönenberger, Christian. (2014) Fabrication of ballistic suspended graphene with local-gating. Carbon, Vol. 79. pp. 486-492.

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Official URL: http://edoc.unibas.ch/dok/A6338962

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Abstract

Herein we discuss the fabrication of ballistic suspended graphene nanostructures supplemented with local gating. Using in situ current annealing, we show that exceptional high mobilities can be obtained in these devices. A detailed description is given of the fabrication of bottom and different top-gate structures, which enable the realization of complex graphene structures. We have studied the basic building block, the p-n junction in detail, where a striking oscillating pattern was observed, which can be traced back to Fabry-Perot oscillations that are localized in the electronic cavities formed by the local gates. Finally we show some examples how the method can be extended to incorporate multi-terminal junctions or shaped graphene. The structures discussed here enable the access to electron-optics experiments in ballistic graphene. (C) 2014 Elsevier Ltd. All rights reserved.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Experimentalphysik Nanoelektronik (Schönenberger)
UniBasel Contributors:Schönenberger, Christian and Maurand, Romain and Rickhaus, Peter and Makk, Peter and Hess, Samuel and Handschin, Clevin and Weiss, Markus
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Elsevier
ISSN:0008-6223
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:06 Feb 2015 09:59
Deposited On:06 Feb 2015 09:59

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