This title appears in the Scientific Report :
2010
Please use the identifier:
http://hdl.handle.net/2128/18111 in citations.
Please use the identifier: http://dx.doi.org/10.1063/1.3457386 in citations.
High temperature conductance characteristics of LaAlO3/SrTiO3-heterostructures under equilibrium oxygen atmospheres
High temperature conductance characteristics of LaAlO3/SrTiO3-heterostructures under equilibrium oxygen atmospheres
The interface conductance of LaAlO3/SrTiO3 heterostructures was investigated under high temperature oxygen equilibrium. The dependence of the heterostructure's conductance on oxygen partial pressure (from 10(-22) to 1 bar) and temperature (800 to 1100 K) was compared to the characteristic of Sr...
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Personal Name(s): | Gunkel, F. |
---|---|
Hoffmann-Eifert, S. / Dittmann, R. / Mi, S.B. / Jia, C.-L. / Meuffels, P. / Waser, R. | |
Contributing Institute: |
Elektronische Materialien; IFF-6 Mikrostrukturforschung; IFF-8 JARA-FIT; JARA-FIT |
Published in: | Applied physics letters, 97 (2010) S. 012103 |
Imprint: |
Melville, NY
American Institute of Physics
2010
|
Physical Description: |
012103 |
DOI: |
10.1063/1.3457386 |
Document Type: |
Journal Article |
Research Program: |
Grundlagen für zukünftige Informationstechnologien |
Series Title: |
Applied Physics Letters
97 |
Subject (ZB): | |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1063/1.3457386 in citations.
The interface conductance of LaAlO3/SrTiO3 heterostructures was investigated under high temperature oxygen equilibrium. The dependence of the heterostructure's conductance on oxygen partial pressure (from 10(-22) to 1 bar) and temperature (800 to 1100 K) was compared to the characteristic of SrTiO3 single crystals, which is described in terms of a defect chemistry model. Up to 950 K the equilibrated heterostructures reveal an additional influence of a metallic-like conduction path with a very slight dependence on the oxygen partial pressure. Donor-type interface states which may result from either lattice distortions or A-site cation intermixing during processing are discussed as a possible origin for the exceptional interface conduction of LaAlO3/SrTiO3 heterostructures. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3457386] |