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Electronic coupling between Bi nanolines and the Si(001) substrate: An experimental and theoretical study

Longobardi, M; Kirkham, CJ; Villarreal, R; Koster, SA; Bowler, DR; Renner, C; (2017) Electronic coupling between Bi nanolines and the Si(001) substrate: An experimental and theoretical study. Physical Review B , 96 (23) , Article 235421. 10.1103/PhysRevB.96.235421. Green open access

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Abstract

Atomic nanolines are one-dimensional systems realized by assembling many atoms on a substrate into long arrays. The electronic properties of the nanolines depend on those of the substrate. Here, we demonstrate that to fully understand the electronic properties of Bi nanolines on clean Si(001) several different contributions must be accounted for. Scanning tunneling microscopy reveals a variety of different patterns along the nanolines as the imaging bias is varied. We observe an electronic phase shift of the Bi dimers, associated with imaging atomic p orbitals, and an electronic coupling between the Bi nanoline and neighboring Si dimers, which influences the appearance of both. Understanding the interplay between the Bi nanolines and Si substrate could open a novel route to modifying the electronic properties of the nanolines.

Type: Article
Title: Electronic coupling between Bi nanolines and the Si(001) substrate: An experimental and theoretical study
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevB.96.235421
Publisher version: https://doi.org/10.1103/PhysRevB.96.235421
Language: English
Additional information: ©2017 American Physical Society. This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Science & Technology, Physical Sciences, Physics, Condensed Matter, Physics, Scanning-Tunneling-Microscopy, Hydrogenated Si(001), Low-Temperature, Surfaces, Dimers, Bismuth, Images
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: http://discovery.ucl.ac.uk/id/eprint/10041147
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