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Band Structure and Energy Level Alignment of Chiral Graphene Nanoribbons on Silver Surfaces
Chiral graphene nanoribbons are extremely interesting structures due to their narrow band gaps and potential development of spin-polarized edge states. Here, we study their band structure on low work function silver surfaces. The use of a curved Ag single crystal provides, within the same sample, re...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8705322/ https://www.ncbi.nlm.nih.gov/pubmed/34947652 http://dx.doi.org/10.3390/nano11123303 |
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author | Corso, Martina Menchón, Rodrigo E. Piquero-Zulaica, Ignacio Vilas-Varela, Manuel Ortega, J. Enrique Peña, Diego Garcia-Lekue, Aran de Oteyza, Dimas G. |
author_facet | Corso, Martina Menchón, Rodrigo E. Piquero-Zulaica, Ignacio Vilas-Varela, Manuel Ortega, J. Enrique Peña, Diego Garcia-Lekue, Aran de Oteyza, Dimas G. |
author_sort | Corso, Martina |
collection | PubMed |
description | Chiral graphene nanoribbons are extremely interesting structures due to their narrow band gaps and potential development of spin-polarized edge states. Here, we study their band structure on low work function silver surfaces. The use of a curved Ag single crystal provides, within the same sample, regions of disparate step structure and step density. Whereas the former leads to distinct azimuthal growth orientations of the graphene nanoribbons atop, the latter modulates the substrate’s work function and thereby the interface energy level alignment. In turn, we disclose the associated charge transfer from the substrate to the ribbon and assess its effect on the nanoribbon’s properties and the edge state magnetization. |
format | Online Article Text |
id | pubmed-8705322 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-87053222021-12-25 Band Structure and Energy Level Alignment of Chiral Graphene Nanoribbons on Silver Surfaces Corso, Martina Menchón, Rodrigo E. Piquero-Zulaica, Ignacio Vilas-Varela, Manuel Ortega, J. Enrique Peña, Diego Garcia-Lekue, Aran de Oteyza, Dimas G. Nanomaterials (Basel) Article Chiral graphene nanoribbons are extremely interesting structures due to their narrow band gaps and potential development of spin-polarized edge states. Here, we study their band structure on low work function silver surfaces. The use of a curved Ag single crystal provides, within the same sample, regions of disparate step structure and step density. Whereas the former leads to distinct azimuthal growth orientations of the graphene nanoribbons atop, the latter modulates the substrate’s work function and thereby the interface energy level alignment. In turn, we disclose the associated charge transfer from the substrate to the ribbon and assess its effect on the nanoribbon’s properties and the edge state magnetization. MDPI 2021-12-06 /pmc/articles/PMC8705322/ /pubmed/34947652 http://dx.doi.org/10.3390/nano11123303 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Corso, Martina Menchón, Rodrigo E. Piquero-Zulaica, Ignacio Vilas-Varela, Manuel Ortega, J. Enrique Peña, Diego Garcia-Lekue, Aran de Oteyza, Dimas G. Band Structure and Energy Level Alignment of Chiral Graphene Nanoribbons on Silver Surfaces |
title | Band Structure and Energy Level Alignment of Chiral Graphene Nanoribbons on Silver Surfaces |
title_full | Band Structure and Energy Level Alignment of Chiral Graphene Nanoribbons on Silver Surfaces |
title_fullStr | Band Structure and Energy Level Alignment of Chiral Graphene Nanoribbons on Silver Surfaces |
title_full_unstemmed | Band Structure and Energy Level Alignment of Chiral Graphene Nanoribbons on Silver Surfaces |
title_short | Band Structure and Energy Level Alignment of Chiral Graphene Nanoribbons on Silver Surfaces |
title_sort | band structure and energy level alignment of chiral graphene nanoribbons on silver surfaces |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8705322/ https://www.ncbi.nlm.nih.gov/pubmed/34947652 http://dx.doi.org/10.3390/nano11123303 |
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