Metallic and Insulating Interfaces of Amorphous SrTiO3-Based Oxide Heterostructures

Publication: Research - peer-reviewJournal article – Annual report year: 2011

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The conductance confined at the interface of complex oxide heterostructures provides new opportunities to explore nanoelectronic as well as nanoionic devices. Herein we show that metallic interfaces can be realized in SrTiO3-based heterostructures with various insulating overlayers of amorphous LaAlO3, SrTiO3, and yttria-stabilized zirconia films. On the other hand, samples of amorphous La7/8Sr1/8MnO3 films on SrTiO3 substrates remain insulating. The interfacial conductivity results from the formation of oxygen vacancies near the interface, suggesting that the redox reactions on the surface of SrTiO3 substrates play an important role.
Original languageEnglish
JournalNano Letters
Publication date2011
Volume11
Issue9
Pages3774-3778
ISSN1530-6984
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 46

Keywords

  • Solid Oxide Fuel Cells
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