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Gate tuneable beamsplitter in ballistic graphene

Rickhaus, Peter and Makk, Peter and Liu, Ming-Hao and Richter, Klaus and Schönenberger, Christian. (2015) Gate tuneable beamsplitter in ballistic graphene. Applied physics letters, 107 (25). p. 251901.

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Official URL: http://edoc.unibas.ch/41332/

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Abstract

We present a beam splitter in a suspended, ballistic, multiterminal, bilayer graphene device. By using local bottomgates, a p-n interface tilted with respect to the current direction can be formed. We show that the p-n interface acts as a semi-transparent mirror in the bipolar regime and that the reflectance and transmittance of the p-n interface can be tuned by the gate voltages. Moreover, by studying the conductance features appearing in magnetic field, we demonstrate that the position of the p-n interface can be moved by 1 μm. The herein presented beamsplitter device can form the basis of electron-optic interferometers in graphene.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Experimentalphysik Nanoelektronik (Schönenberger)
UniBasel Contributors:Rickhaus, Peter and Makk, Peter and Schönenberger, Christian
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Institute of Physics
ISSN:0003-6951
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:05 Apr 2017 14:47
Deposited On:12 May 2016 09:40

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