Vacancy clusters at domain boundaries and band bending at the SrTiO3(110) surface
- Author(s)
- Zhiming Wang, Xianfeng Hao, Stefan Gerhold, Michael Schmid, Cesare Franchini, Ulrike Diebold
- Abstract
Antiphase domain boundaries (APDBs) in the (n×1)(n=4,5) reconstructions of the SrTiO3(110) surface were studied with scanning tunneling microscopy, x-ray photoemission spectroscopy, and density functional theory (DFT) calculations. Two types of APDBs form on each reconstruction; they consist of TixOy vacancy clusters with a specific stoichiometry. The presence of these clusters is controlled by the oxygen pressure during annealing. The structural models of the vacancy clusters are resolved with DFT, which also shows that their relative stability depends on the chemical potential of oxygen. The surface band bending can be tuned by controlling the vacancy clusters at the domain boundaries.
- Organisation(s)
- Computational Materials Physics
- External organisation(s)
- Technische Universität Wien
- Journal
- Physical Review B
- Volume
- 90
- No. of pages
- 5
- ISSN
- 1098-0121
- DOI
- https://doi.org/10.1103/PhysRevB.90.035436
- Publication date
- 07-2014
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103009 Solid state physics, 103015 Condensed matter, 103025 Quantum mechanics, 103036 Theoretical physics
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/vacancy-clusters-at-domain-boundaries-and-band-bending-at-the-srtio3110-surface(d6cb75a8-29a9-4404-988b-e0a05df56f52).html