Journal article
Transition from reconstruction toward thin film on the (110) surface of strontium titanate
- Abstract:
- The surfaces of metal oxides often are reconstructed with a geometry and composition that is considerably different from a simple termination of the bulk. Such structures can also be viewed as ultrathin films, epitaxed on a substrate. Here, the reconstructions of the SrTiO3 (110) surface are studied combining scanning tunneling microscopy (STM), transmission electron diffraction, and X-ray absorption spectroscopy (XAS), and analyzed with density functional theory calculations. Whereas SrTiO3 (110) invariably terminates with an overlayer of titania, with increasing density its structure switches from n × 1 to 2 × n. At the same time the coordination of the Ti atoms changes from a network of corner-sharing tetrahedra to a double layer of edge-shared octahedra with bridging units of octahedrally coordinated strontium. This transition from the n × 1 to 2 × n reconstructions is a transition from a pseudomorphically stabilized tetrahedral network toward an octahedral titania thin film with stress-relief from octahedral strontia units at the surface.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 3.1MB, Terms of use)
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(Supplementary materials, zip, 1.2MB, Terms of use)
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- Publisher copy:
- 10.1021/acs.nanolett.5b05211
Authors
+ U.S. National Science Foundation
More from this funder
- Funder identifier:
- https://ror.org/021nxhr62
- Grant:
- DMR-0710643
- DMR-0710643
- Funding agency for:
- Castell, MR
+ European Research Council
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- Funder identifier:
- https://ror.org/0472cxd90
- Grant:
- OxideSurfaces
+ United States Department of Energy
More from this funder
- Funder identifier:
- https://ror.org/01bj3aw27
- Grant:
- DE-FG02-01ER45945
+ Northwestern University Institute for Catalysis in Energy Processes
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- Grant:
- DOE DE-FG02-03-ER15457
- Publisher:
- American Chemical Society
- Journal:
- Nano Letters More from this journal
- Volume:
- 16
- Issue:
- 4
- Pages:
- 2407–2412
- Publication date:
- 2016-03-08
- Acceptance date:
- 2016-02-10
- DOI:
- EISSN:
-
1530-6992
- ISSN:
-
1530-6984
- Language:
-
English
- Keywords:
- Pubs id:
-
pubs:611647
- UUID:
-
uuid:cd1a9e65-a381-44cf-bc9d-3eb371565111
- Local pid:
-
pubs:611647
- Source identifiers:
-
611647
- Deposit date:
-
2016-03-31
Terms of use
- Copyright holder:
- American Chemical Society
- Copyright date:
- 2016
- Rights statement:
- Copyright © 2016 American Chemical Society This is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
- Licence:
- CC Attribution (CC BY)
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