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Interfacial control of oxygen vacancy doping and electrical conduction in thin film oxide heterostructures
- Source :
- Nature Communications, Nature Communications, Vol 7, Iss 1, Pp 1-8 (2016)
- Publication Year :
- 2016
- Publisher :
- Springer Science and Business Media LLC, 2016.
-
Abstract
- Oxygen vacancies in proximity to surfaces and heterointerfaces in oxide thin film heterostructures have major effects on properties, resulting, for example, in emergent conduction behaviour, large changes in metal-insulator transition temperatures or enhanced catalytic activity. Here we report the discovery of a means of reversibly controlling the oxygen vacancy concentration and distribution in oxide heterostructures consisting of electronically conducting In2O3 films grown on ionically conducting Y2O3-stabilized ZrO2 substrates. Oxygen ion redistribution across the heterointerface is induced using an applied electric field oriented in the plane of the interface, resulting in controlled oxygen vacancy (and hence electron) doping of the film and possible orders-of-magnitude enhancement of the film's electrical conduction. The reversible modified behaviour is dependent on interface properties and is attained without cation doping or changes in the gas environment.<br />Oxygen vacancies near the interface in oxide heterostructures can lead to large changes in properties, including metal–insulator transition temperatures or catalytic activity. Here, the authors demonstrate a way to reversibly control the oxygen-vacancy concentration and distribution in oxide heterostructures.
- Subjects :
- Materials science
Science
Oxide
General Physics and Astronomy
chemistry.chemical_element
02 engineering and technology
010402 general chemistry
01 natural sciences
Oxygen
Article
General Biochemistry, Genetics and Molecular Biology
Condensed Matter::Materials Science
chemistry.chemical_compound
Electric field
Ionic conductivity
Physics::Chemical Physics
Thin film
Multidisciplinary
Doping
Heterojunction
General Chemistry
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
021001 nanoscience & nanotechnology
Thermal conduction
0104 chemical sciences
chemistry
Chemical physics
0210 nano-technology
Subjects
Details
- ISSN :
- 20411723
- Volume :
- 7
- Database :
- OpenAIRE
- Journal :
- Nature Communications
- Accession number :
- edsair.doi.dedup.....52141d735d0faaca045a38027099908d