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Bandgap formation in graphene on Ir(111) through oxidation

Schulte, Karina LU ; Vinogradov, Nikolay LU orcid ; Ng, May Ling LU ; Mårtensson, Nils LU and Preobrajenski, Alexei LU (2013) In Applied Surface Science 267. p.74-76
Abstract
A graphene monolayer on single crystal Ir(111) has been studied using angle-resolved photoemission spectroscopy (ARPES) before and after exposure to atomic oxygen. With increasing oxygen coverage the Dirac cone, centered on the K-point of the Brillouin zone, broadens and finally transforms to a parabolic rather than linear feature, introducing a pronounced energy bandgap at the Fermi level. The opening of a bandgap of at least 0.35 eV was observed at the oxygen exposure close to the saturation coverage. (C) 2012 Elsevier B. V. All rights reserved.
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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Graphene, Oxidation, Electronic structure: photoelectron spectroscopy, Adsorbates: binding site geometry, Electronic structure
in
Applied Surface Science
volume
267
pages
74 - 76
publisher
Elsevier
external identifiers
  • wos:000314881900018
  • scopus:84873715916
ISSN
1873-5584
DOI
10.1016/j.apsusc.2012.07.122
language
English
LU publication?
yes
id
8ab1c852-b286-43fd-b100-c1208471796f (old id 3671687)
date added to LUP
2016-04-01 10:06:29
date last changed
2022-01-25 19:45:53
@article{8ab1c852-b286-43fd-b100-c1208471796f,
  abstract     = {{A graphene monolayer on single crystal Ir(111) has been studied using angle-resolved photoemission spectroscopy (ARPES) before and after exposure to atomic oxygen. With increasing oxygen coverage the Dirac cone, centered on the K-point of the Brillouin zone, broadens and finally transforms to a parabolic rather than linear feature, introducing a pronounced energy bandgap at the Fermi level. The opening of a bandgap of at least 0.35 eV was observed at the oxygen exposure close to the saturation coverage. (C) 2012 Elsevier B. V. All rights reserved.}},
  author       = {{Schulte, Karina and Vinogradov, Nikolay and Ng, May Ling and Mårtensson, Nils and Preobrajenski, Alexei}},
  issn         = {{1873-5584}},
  keywords     = {{Graphene; Oxidation; Electronic structure: photoelectron spectroscopy; Adsorbates: binding site geometry; Electronic structure}},
  language     = {{eng}},
  pages        = {{74--76}},
  publisher    = {{Elsevier}},
  series       = {{Applied Surface Science}},
  title        = {{Bandgap formation in graphene on Ir(111) through oxidation}},
  url          = {{http://dx.doi.org/10.1016/j.apsusc.2012.07.122}},
  doi          = {{10.1016/j.apsusc.2012.07.122}},
  volume       = {{267}},
  year         = {{2013}},
}