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arXiv · 1509.02653

Guiding of Electrons in a Few Mode Ballistic Graphene Channel

Peter Rickhaus·Ming-Hao Liu·Péter Makk·Romain Maurand·Samuel Hess·Simon Zihlmann·Markus Weiss·Klaus Richter·Christian Schönenberger
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Abstract

In graphene, the extremely fast charge carriers can be controlled by electron-optical elements, such as waveguides, in which the transmissivity is tuned by the wavelength. In this work, charge carriers are guided in a suspended ballistic few-mode graphene channel, defined by electrostatic gating. By depleting the channel, a reduction of mode number and steps in the conductance are observed, until the channel is completely emptied. The measurements are supported by tight-binding transport calculations including the full electrostatics of the sample.

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Peter Rickhaus, Ming-Hao Liu, Péter Makk, Romain Maurand, Samuel Hess, Simon Zihlmann, Markus Weiss, Klaus Richter, Christian Schönenberger. 2015-09-09. Guiding of Electrons in a Few Mode Ballistic Graphene Channel. https://doi.org/10.1021/acs.nanolett.5b01877

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