Manipulation of Spin Polarization in Boron-Substituted Graphene Nanoribbons
No Thumbnail Available
Access rights
openAccess
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
Date
2022-07-26
Department
Major/Subject
Mcode
Degree programme
Language
en
Pages
7
11244–11250
11244–11250
Series
ACS Nano, Volume 16
Abstract
The design of magnetic topological states due to spin polarization in an extended πcarbon 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.Description
Funding Information: This work was supported in part by Japan Society for the Promotion of Science (JSPS) KAKENHI Grant Nos. 21F21058, 21K18885, and 22H00285. Computing resources from the Aalto Science-IT project and CSC, Helsinki are gratefully acknowledged. A.S.F. was supported by the World Premier International Research Center Initiative (WPI), MEXT, Japan. K.Sun thanks S. Yoshizawa for his technical support in the STM measurement in the magnetic field. Publisher Copyright: © 2022 American Chemical Society.
Keywords
AuSilayer, boron substituted graphene nanoribbons, Kondo resonance, scanning tunneling microscopy/spectroscopy, silicon atoms, spin polarization
Other note
Citation
Sun, K, Silveira, O J, Saito, S, Sagisaka, K, Yamaguchi, S, Foster, A S & Kawai, S 2022, ' Manipulation of Spin Polarization in Boron-Substituted Graphene Nanoribbons ', ACS Nano, vol. 16, no. 7, pp. 11244–11250 . https://doi.org/10.1021/acsnano.2c04563