Guiding of Electrons in a Few-Mode Ballistic Graphene Channel.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 26280622.
- Also identified by DOI 10.1021/acs.nanolett.5b01877.
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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.