Suppression of the two-dimensional electron gas in LaGaO3/SrTiO3 by cation intermixing
KAUST DepartmentPhysical Sciences and Engineering (PSE) Division
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AbstractCation intermixing at the n-type polar LaGaO 3 /SrTiO 3 (001) interface is investigated by first principles calculations. Ti"Ga, Sr"La, and SrTi"LaGa intermixing are studied in comparison to each other, with a focus on the interface stability. We demonstrate in which cases intermixing is energetically favorable as compared to a clean interface. A depopulation of the Ti 3d xy orbitals under cation intermixing is found, reflecting a complete suppression of the two-dimensional electron gas present at the clean interface.
CitationNazir S, Amin B, Schwingenschlögl U (2013) Suppression of the two-dimensional electron gas in LaGaO3/SrTiO3 by cation intermixing. Sci Rep 3. doi:10.1038/srep03409.
PublisherNature Publishing Group
PubMed Central IDPMC3847700
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