Journal Article

PreJuSER-10518

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png High temperature conductance characteristics of LaAlO3/SrTiO3-heterostructures under equilibrium oxygen atmospheres

Gunkel, F.FZJ* ; Hoffmann-Eifert, S.FZJ* ; Dittmann, R.FZJ* ; Mi, S. B.FZJ* ; Jia, C.-L.FZJ* ; Meuffels, P.FZJ* ; Waser, R.FZJ*

2010
American Institute of Physics Melville, NY

This record in other databases:  

Please use a persistent id in citations: http://hdl.handle.net/2128/18111  doi:10.1063/1.3457386

Abstract: 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]

Keyword(s): J ; lanthanum compounds (auto) ; semiconductor heterojunctions (auto) ; strontium compounds (auto)

Note: Record converted from VDB: 12.11.2012

---

Contributing Institute(s):

1. Elektronische Materialien (IFF-6)
2. Jülich-Aachen Research Alliance - Fundamentals of Future Information Technology (JARA-FIT)
3. Mikrostrukturforschung (IFF-8)

Research Program(s):

1. Grundlagen für zukünftige Informationstechnologien (P42)

Appears in the scientific report 2010

---

Database coverage:

---