Ballistic tracks in graphene nanoribbons

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Aprojanz, J.; Power, S.R.; Bampoulis, P.; Roche, S.; Jauho, A.-P.; et al.: Ballistic tracks in graphene nanoribbons. In: Nature Communications 9 (2018), Nr. 1, 4426. DOI: https://doi.org/10.1038/s41467-018-06940-5

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Sum total of downloads: 40




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Abstract: 
High quality graphene nanoribbons epitaxially grown on the sidewalls of silicon carbide (SiC) mesa structures stand as key building blocks for graphene-based nanoelectronics. Such ribbons display 1D single-channel ballistic transport at room temperature with exceptionally long mean free paths. Here, using spatially-resolved two-point probe (2PP) measurements, we selectively access and directly image a range of individual transport modes in sidewall ribbons. The signature of the independently contacted channels is a sequence of quantised conductance plateaus for different probe positions. These result from an interplay between edge magnetism and asymmetric terminations at opposite ribbon edges due to the underlying SiC structure morphology. Our findings demonstrate a precise control of transport through multiple, independent, ballistic tracks in graphene-based devices, opening intriguing pathways for quantum information device concepts.
License of this version: CC BY 4.0 Unported
Document Type: article
Publishing status: publishedVersion
Issue Date: 2018
Appears in Collections:Fakultät für Mathematik und Physik

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1 image of flag of Germany Germany 36 90.00%
2 image of flag of Netherlands Netherlands 2 5.00%
3 image of flag of Korea, Republic of Korea, Republic of 2 5.00%

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