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...

Descripción completa

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
Descripción
Sumario: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).

Ejemplares similares