Ballistic tracks in graphene nanoribbons
(2018) In Nature Communications 9(1).- 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... (More)
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.
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- author
- Aprojanz, Johannes ; Power, Stephen R. ; Bampoulis, Pantelis ; Roche, Stephan ; Jauho, Antti Pekka ; Zandvliet, Harold J.W. ; Zakharov, Alexei A. LU and Tegenkamp, Christoph
- organization
- publishing date
- 2018
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Nature Communications
- volume
- 9
- issue
- 1
- article number
- 4426
- publisher
- Nature Publishing Group
- external identifiers
-
- pmid:30356162
- scopus:85055462363
- ISSN
- 2041-1723
- DOI
- 10.1038/s41467-018-06940-5
- language
- English
- LU publication?
- yes
- id
- e6a1b182-5bba-46d1-a52a-2154f836452e
- date added to LUP
- 2018-11-14 12:44:28
- date last changed
- 2024-01-30 02:09:31
@article{e6a1b182-5bba-46d1-a52a-2154f836452e,
abstract = {{<p>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.</p>}},
author = {{Aprojanz, Johannes and Power, Stephen R. and Bampoulis, Pantelis and Roche, Stephan and Jauho, Antti Pekka and Zandvliet, Harold J.W. and Zakharov, Alexei A. and Tegenkamp, Christoph}},
issn = {{2041-1723}},
language = {{eng}},
number = {{1}},
publisher = {{Nature Publishing Group}},
series = {{Nature Communications}},
title = {{Ballistic tracks in graphene nanoribbons}},
url = {{http://dx.doi.org/10.1038/s41467-018-06940-5}},
doi = {{10.1038/s41467-018-06940-5}},
volume = {{9}},
year = {{2018}},
}