期刊
PHYSICAL REVIEW B
卷 90, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.90.035436
关键词
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资金
- Austrian Science Fund (FWF) [F45]
- ERC Advanced Research Grant OxideSurfaces.
- Austrian Science Fund (FWF) [W1243] Funding Source: Austrian Science Fund (FWF)
Antiphase domain boundaries (APDBs) in the (n x 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.
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