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The design of magnetic topological states due to spin polarization in an extended π carbon system has great potential in spintronics application. Although magnetic zigzag edges in graphene nanoribbons (GNRs) have been investigated earlier, real-space observation and manipulation of spin polarization in a heteroatom substituted system remains challenging. Here, we investigate a zero-bias peak at a boron site embedded at the center of an armchair-type GNR on a AuSiX/Au(111) surface with a combination of low-temperature scanning tunneling microscopy/spectroscopy and density functional theory calculations. After the tip-induced removal of a Si atom connected to two adjacent boron atoms, a clear Kondo resonance peak appeared and was further split by an applied magnetic field of 12 T. This magnetic state can be relayed along the longitudinal axis of the GNR by sequential removal of Si atoms.

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• In Copyright
  

  This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Nano, copyright © 2022 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsnano.2c04563

Keyword: spin polarization, boron, graphene nanoribbons

Date published: 2022-07-26

Publisher: American Chemical Society (ACS)

Journal:

• ACS Nano (ISSN: 1936086X) vol. 16 issue. 7 p. 11244-11250

Funding:

• Japan Society for the Promotion of Science 21F21058
• Japan Society for the Promotion of Science 21K18885
• Japan Society for the Promotion of Science 22H00285

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.4349

First published URL: https://doi.org/10.1021/acsnano.2c04563

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Updated at: 2024-01-16 09:44:59 +0900

Published on MDR: 2024-01-16 12:30:11 +0900