Scanning tunneling spectroscopy of epitaxial graphene nanoisland on Ir(111)

Scanning tunneling spectroscopy (STS) was used to measure local differential conductance (dI/dV) spectra on nanometer-size graphene islands on an Ir(111) surface. Energy resolved dI/dV maps clearly show a spatial modulation, which we ascribe to a modulated local density of states due to quantum conf...

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Detalles Bibliográficos
Autores principales: Phark, Soo-hyon, Borme, Jérôme, Vanegas, Augusto León, Corbetta, Marco, Sander, Dirk, Kirschner, Jürgen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer 2012
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3414757/
https://www.ncbi.nlm.nih.gov/pubmed/22587725
http://dx.doi.org/10.1186/1556-276X-7-255
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author Phark, Soo-hyon
Borme, Jérôme
Vanegas, Augusto León
Corbetta, Marco
Sander, Dirk
Kirschner, Jürgen
author_facet Phark, Soo-hyon
Borme, Jérôme
Vanegas, Augusto León
Corbetta, Marco
Sander, Dirk
Kirschner, Jürgen
author_sort Phark, Soo-hyon
collection PubMed
description Scanning tunneling spectroscopy (STS) was used to measure local differential conductance (dI/dV) spectra on nanometer-size graphene islands on an Ir(111) surface. Energy resolved dI/dV maps clearly show a spatial modulation, which we ascribe to a modulated local density of states due to quantum confinement. STS near graphene edges indicates a position dependence of the dI/dV signals, which suggests a reduced density of states near the edges of graphene islands on Ir(111).
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spelling pubmed-34147572012-08-09 Scanning tunneling spectroscopy of epitaxial graphene nanoisland on Ir(111) Phark, Soo-hyon Borme, Jérôme Vanegas, Augusto León Corbetta, Marco Sander, Dirk Kirschner, Jürgen Nanoscale Res Lett Nano Express Scanning tunneling spectroscopy (STS) was used to measure local differential conductance (dI/dV) spectra on nanometer-size graphene islands on an Ir(111) surface. Energy resolved dI/dV maps clearly show a spatial modulation, which we ascribe to a modulated local density of states due to quantum confinement. STS near graphene edges indicates a position dependence of the dI/dV signals, which suggests a reduced density of states near the edges of graphene islands on Ir(111). Springer 2012-05-15 /pmc/articles/PMC3414757/ /pubmed/22587725 http://dx.doi.org/10.1186/1556-276X-7-255 Text en Copyright ©2012 Phark et al.; licensee Springer. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Nano Express
Phark, Soo-hyon
Borme, Jérôme
Vanegas, Augusto León
Corbetta, Marco
Sander, Dirk
Kirschner, Jürgen
Scanning tunneling spectroscopy of epitaxial graphene nanoisland on Ir(111)
title Scanning tunneling spectroscopy of epitaxial graphene nanoisland on Ir(111)
title_full Scanning tunneling spectroscopy of epitaxial graphene nanoisland on Ir(111)
title_fullStr Scanning tunneling spectroscopy of epitaxial graphene nanoisland on Ir(111)
title_full_unstemmed Scanning tunneling spectroscopy of epitaxial graphene nanoisland on Ir(111)
title_short Scanning tunneling spectroscopy of epitaxial graphene nanoisland on Ir(111)
title_sort scanning tunneling spectroscopy of epitaxial graphene nanoisland on ir(111)
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3414757/
https://www.ncbi.nlm.nih.gov/pubmed/22587725
http://dx.doi.org/10.1186/1556-276X-7-255
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