Ammerman, S. E.; Jelic, V.; Wei, Y.; Breslin, V. N.; Hassan, M.; Everett, N.; Lee, S.; Sun, Q.; Pignedoli, C. A.; Ruffieux, P.; Fasel, Roman; Cocker, T. L. (2021). Lightwave-driven scanning tunnelling spectroscopy of atomically precise graphene nanoribbons. Nature Communications, 12(1), p. 6794. Springer Nature 10.1038/s41467-021-26656-3
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21_Ammerman_Nat._Commun._Lightwave-driven_scanning_tunnelling_spectroscopy_of_atomically_precise_graphene_nanoribbons.pdf - Published Version Available under License Creative Commons: Attribution (CC-BY). Download (2MB) | Preview |
Atomically precise electronics operating at optical frequencies require tools that can characterize them on their intrinsic length and time scales to guide device design. Lightwave-driven scanning tunnelling microscopy is a promising technique towards this purpose. It achieves simultaneous sub-ångström and sub-picosecond spatio-temporal resolution through ultrafast coherent control by single-cycle field transients that are coupled to the scanning probe tip from free space. Here, we utilize lightwave-driven terahertz scanning tunnelling microscopy and spectroscopy to investigate atomically precise seven-atom-wide armchair graphene nanoribbons on a gold surface at ultralow tip heights, unveiling highly localized wavefunctions that are inaccessible by conventional scanning tunnelling microscopy. Tomographic imaging of their electron densities reveals vertical decays that depend sensitively on wavefunction and lateral position. Lightwave-driven scanning tunnelling spectroscopy on the ångström scale paves the way for ultrafast measurements of wavefunction dynamics in atomically precise nanostructures and future optoelectronic devices based on locally tailored electronic properties.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
08 Faculty of Science > Department of Chemistry, Biochemistry and Pharmaceutical Sciences (DCBP) |
UniBE Contributor: |
Fasel, Roman |
Subjects: |
500 Science > 530 Physics 500 Science > 540 Chemistry |
ISSN: |
2041-1723 |
Publisher: |
Springer Nature |
Language: |
English |
Submitter: |
Roman Fasel |
Date Deposited: |
17 Feb 2022 15:46 |
Last Modified: |
05 Dec 2022 16:05 |
Publisher DOI: |
10.1038/s41467-021-26656-3 |
PubMed ID: |
34815398 |
BORIS DOI: |
10.48350/164881 |
URI: |
https://boris.unibe.ch/id/eprint/164881 |
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