Electronic transport in locally gated graphene nanoconstrictions

Barbaros Özyilmaz; Pablo Jarillo-Herrero; Dmitri Efetov; Philip Kim

doi:10.1063/1.2803074

Electronic transport in locally gated graphene nanoconstrictions

Mesoscale and Nanoscale Physics 2009-11-13 v1

Authors: Barbaros Özyilmaz , Pablo Jarillo-Herrero , Dmitri Efetov , Philip Kim

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Abstract

We have developed the combination of an etching and deposition technique 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.

Keywords

graphene nanoconstriction local gate electronic transport quantum confinement Coulomb blockade

Cite

@article{arxiv.0709.1731,
  title  = {Electronic transport in locally gated graphene nanoconstrictions},
  author = {Barbaros Özyilmaz and Pablo Jarillo-Herrero and Dmitri Efetov and Philip Kim},
  journal= {arXiv preprint arXiv:0709.1731},
  year   = {2009}
}

Comments

3 pages 3 figures; separated and expanded from arXiv:0705.3044v1

Electronic transport in locally gated graphene nanoconstrictions

Abstract

Keywords

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