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Formation and Structure of Graphene Waves on Fe(110)

Vinogradov, Nikolay LU ; Zakharov, Alexei LU ; Kocevski, V.; Rusz, J.; Simonov, K. A.; Eriksson, O.; Mikkelsen, Anders LU ; Lundgren, Edvin LU ; Vinogradov, A. S. and Mårtensson, Nils LU , et al. (2012) In Physical Review Letters 109(2).
Abstract
A very rich Fe-C phase diagram makes the formation of graphene on iron surfaces a challenging task. Here we demonstrate that the growth of graphene on epitaxial iron films can be realized by chemical vapor deposition at relatively low temperatures, and that the formation of carbides can be avoided in excess of the carbon-containing precursors. The resulting graphene monolayer creates a novel periodically corrugated pattern on Fe(110). Using low-energy electron microscopy and scanning tunneling microscopy, we show that it is modulated in one dimension forming long waves with a period of similar to 4 nm parallel to the [001] direction of the substrate, with an additional height modulation along the wave crests. The observed topography of the... (More)
A very rich Fe-C phase diagram makes the formation of graphene on iron surfaces a challenging task. Here we demonstrate that the growth of graphene on epitaxial iron films can be realized by chemical vapor deposition at relatively low temperatures, and that the formation of carbides can be avoided in excess of the carbon-containing precursors. The resulting graphene monolayer creates a novel periodically corrugated pattern on Fe(110). Using low-energy electron microscopy and scanning tunneling microscopy, we show that it is modulated in one dimension forming long waves with a period of similar to 4 nm parallel to the [001] direction of the substrate, with an additional height modulation along the wave crests. The observed topography of the graphene/Fe superstructure is well reproduced by density functional theory calculations, and found to result from a unique combination of the lattice mismatch and strong interfacial interaction, as probed by core-level photoemission and x-ray absorption spectroscopy. (Less)
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type
Contribution to journal
publication status
published
subject
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Physical Review Letters
volume
109
issue
2
publisher
American Physical Society
external identifiers
  • wos:000306324100012
  • scopus:84863701209
ISSN
1079-7114
DOI
10.1103/PhysRevLett.109.026101
language
English
LU publication?
yes
id
2c9a3202-6162-40e3-848a-ab46661b72e6 (old id 2994989)
date added to LUP
2012-08-21 15:05:30
date last changed
2017-10-01 03:05:57
@article{2c9a3202-6162-40e3-848a-ab46661b72e6,
  abstract     = {A very rich Fe-C phase diagram makes the formation of graphene on iron surfaces a challenging task. Here we demonstrate that the growth of graphene on epitaxial iron films can be realized by chemical vapor deposition at relatively low temperatures, and that the formation of carbides can be avoided in excess of the carbon-containing precursors. The resulting graphene monolayer creates a novel periodically corrugated pattern on Fe(110). Using low-energy electron microscopy and scanning tunneling microscopy, we show that it is modulated in one dimension forming long waves with a period of similar to 4 nm parallel to the [001] direction of the substrate, with an additional height modulation along the wave crests. The observed topography of the graphene/Fe superstructure is well reproduced by density functional theory calculations, and found to result from a unique combination of the lattice mismatch and strong interfacial interaction, as probed by core-level photoemission and x-ray absorption spectroscopy.},
  articleno    = {026101},
  author       = {Vinogradov, Nikolay and Zakharov, Alexei and Kocevski, V. and Rusz, J. and Simonov, K. A. and Eriksson, O. and Mikkelsen, Anders and Lundgren, Edvin and Vinogradov, A. S. and Mårtensson, Nils and Preobrajenski, Alexei},
  issn         = {1079-7114},
  language     = {eng},
  number       = {2},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {Formation and Structure of Graphene Waves on Fe(110)},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.109.026101},
  volume       = {109},
  year         = {2012},
}