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Applied Physics Letters / Volume 91 / Issue 19 / ELECTRONIC TRANSPORT AND SEMICONDUCTORS

Appl. Phys. Lett. 91, 192107 (2007); http://dx.doi.org/10.1063/1.2803074 (3 pages)

Electronic transport in locally gated graphene nanoconstrictions

Barbaros Özyilmaz, Pablo Jarillo-Herrero, Dmitri Efetov, and Philip Kim

Department of Physics, Columbia University, New York, New York 10027, USA

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(Received 11 September 2007; accepted 8 October 2007; published online 8 November 2007)

We have developed the combination of an etching and deposition techniques that enables the fabrication of locally gated graphene nanostructures of arbitrary design. Employing this method, we have fabricated graphene nanoconstrictions with local tunable transmission and characterized their electronic properties. An order of magnitude enhanced gate efficiency is achieved adopting the local gate geometry with thin dielectric gate oxide. A complete turn off of the device is demonstrated as a function of the local gate voltage. Such strong suppression of device conductance was found to be due to both quantum confinement and Coulomb blockade effects in the constricted graphene nanostructures.

© 2007 American Institute of Physics

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KEYWORDS and PACS

Keywords

Coulomb blockade, etching, graphite, nanostructured materials

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2803074

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    V. V. Cheianov and V. I. Fal'ko, Phys. Rev. B 74, 041403(R) (2006).

    M. Y. Han, B. Özyilmaz, B. Y. Zhang, and P. Kim, Phys. Rev. Lett. 98, 206805 (2007).

    B. Huard, J. A. Sulpizio, N. Stander, K. Todd, B. Yang, and D. Goldhaber-Gordon, Phys. Rev. Lett. 98, 236803 (2007).

    M. J. Biercuk, D. J. Monsma, C. M. Marcus, J. S. Becker, and R. G. Gordon, Appl. Phys. Lett. 83, 2405 (2003)APPLAB000083000012002405000001.

    A. C. Ferrari, J. C. Meyer, V. Scardaci, C. Casiraghi, M. Lazzeri, F. Mauri, S. Piscanec, D. Jiang, K. S. Novoselov, S. Roth, and A. K. Geim, Phys. Rev. Lett. 97, 187401 (2006).


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