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Stabilizing Single Ni Adatoms on a Two-Dimensional Porous Titania Overlayer at the SrTiO3(110) Surface.

Wang, Zhiming; Hao, Xianfeng; Gerhold, Stefan; Mares, Petr; Wagner, Margareta; Bliem, Roland; Schulte, Karina LU ; Schmid, Michael; Franchini, Cesare and Diebold, Ulrike (2014) In Journal of Physical Chemistry C 118(34). p.19904-19909
Abstract
Nickel vapor-deposited on the SrTiO3(110) surface was studied using scanning tunneling microscopy, photoemission spectroscopy (PES), and density functional theory calculations. This surface forms a (4 × 1) reconstruction, composed of a 2-D titania structure with periodic six- and ten-membered nanopores. Anchored at these nanopores, Ni single adatoms are stabilized at room temperature. PES measurements show that the Ni adatoms create an in-gap state located at 1.9 eV below the conduction band minimum and induce an upward band bending. Both experimental and theoretical results suggest that Ni adatoms are positively charged. Our study produces well-dispersed single-adatom arrays on a well-characterized oxide support, providing a model system... (More)
Nickel vapor-deposited on the SrTiO3(110) surface was studied using scanning tunneling microscopy, photoemission spectroscopy (PES), and density functional theory calculations. This surface forms a (4 × 1) reconstruction, composed of a 2-D titania structure with periodic six- and ten-membered nanopores. Anchored at these nanopores, Ni single adatoms are stabilized at room temperature. PES measurements show that the Ni adatoms create an in-gap state located at 1.9 eV below the conduction band minimum and induce an upward band bending. Both experimental and theoretical results suggest that Ni adatoms are positively charged. Our study produces well-dispersed single-adatom arrays on a well-characterized oxide support, providing a model system to investigate single-adatom catalytic and magnetic properties. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physical Chemistry C
volume
118
issue
34
pages
19904 - 19909
publisher
The American Chemical Society
external identifiers
  • pmid:25177410
  • wos:000341122200042
  • scopus:84906873787
ISSN
1932-7447
DOI
10.1021/jp506234r
language
English
LU publication?
yes
id
63a487b6-dd54-47fa-82fb-b538f5ce761e (old id 4692689)
date added to LUP
2014-10-03 14:07:55
date last changed
2017-06-18 03:23:23
@article{63a487b6-dd54-47fa-82fb-b538f5ce761e,
  abstract     = {Nickel vapor-deposited on the SrTiO3(110) surface was studied using scanning tunneling microscopy, photoemission spectroscopy (PES), and density functional theory calculations. This surface forms a (4 × 1) reconstruction, composed of a 2-D titania structure with periodic six- and ten-membered nanopores. Anchored at these nanopores, Ni single adatoms are stabilized at room temperature. PES measurements show that the Ni adatoms create an in-gap state located at 1.9 eV below the conduction band minimum and induce an upward band bending. Both experimental and theoretical results suggest that Ni adatoms are positively charged. Our study produces well-dispersed single-adatom arrays on a well-characterized oxide support, providing a model system to investigate single-adatom catalytic and magnetic properties.},
  author       = {Wang, Zhiming and Hao, Xianfeng and Gerhold, Stefan and Mares, Petr and Wagner, Margareta and Bliem, Roland and Schulte, Karina and Schmid, Michael and Franchini, Cesare and Diebold, Ulrike},
  issn         = {1932-7447},
  language     = {eng},
  number       = {34},
  pages        = {19904--19909},
  publisher    = {The American Chemical Society},
  series       = {Journal of Physical Chemistry C},
  title        = {Stabilizing Single Ni Adatoms on a Two-Dimensional Porous Titania Overlayer at the SrTiO3(110) Surface.},
  url          = {http://dx.doi.org/10.1021/jp506234r},
  volume       = {118},
  year         = {2014},
}