1D ballistic transport channel probed by invasive and non-invasive contacts

Epitaxially grown sidewall graphene nanoribbons show a robust quantum conductance of e2/h. By means of in-situ transport measurements with a nanoprobe system, we realized invasive and non-invasive 4-point-probe configurations. The invasiveness correlates with the contact resistance of the voltage pr...

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Veröffentlicht in:Applied physics letters 2018-11, Vol.113 (19)
Hauptverfasser: Aprojanz, Johannes, Miccoli, Ilio, Baringhaus, Jens, Tegenkamp, Christoph
Format: Artikel
Sprache:eng
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Zusammenfassung:Epitaxially grown sidewall graphene nanoribbons show a robust quantum conductance of e2/h. By means of in-situ transport measurements with a nanoprobe system, we realized invasive and non-invasive 4-point-probe configurations. The invasiveness correlates with the contact resistance of the voltage probes. In particular, we achieved now non-invasive voltage probes revealing an almost zero resistance in a collinear 4 point-probe measurement. This proofs the ballistic nature of our epitaxially grown sidewall nanoribbons on SiC(0001) mesa structures.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.5054393