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Origin of Two-Dimensional Electron Gases at Oxide Interfaces [electronic resource] : Insights from Theory

Published
United Kingdom : Engineering and Physical Sciences Research Council, 2014.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Physical Description
Article numbers 143,201 : digital, PDF file
Additional Creators
Argonne National Laboratory, Engineering and Physical Sciences Research Council, United States. Department of Energy. Office of Science, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The response of oxide thin films to polar discontinuities at interfaces and surfaces has generated enormous activity due to the variety of interesting effects that it gives rise to. A case in point is the discovery of the electron gas at the interface between LaAlO3 and SrTiO3, which has since been shown to be quasitwodimensional, switchable, magnetic and/or superconducting. Despite these findings, the origin of the twodimensional electron gas is highly debated and several possible mechanisms remain. Here we review the main proposed mechanisms and attempt to model expected effects in a quantitative way with the ambition of better constraining what effects can/cannot explain the observed phenomenology. We do it in the framework of a phenomenological model constructed to provide an understanding of the electronic and/or redox screening of the chemical charge in oxide heterostructures. We also discuss the effect of intermixing, both conserving and not conserving the total stoichiometry
Report Numbers
E 1.99:1357168
Subject(s)
Note
Published through SciTech Connect.
03/18/2014.
"77670"
Journal of Physics. Condensed Matter 26 14 ISSN 0953-8984 AM
N. C. Bristowe; Philippe Ghosez; Peter B. Littlewood; E. Artacho.
Funding Information
AC02-06CH11357
View MARC record | catkey: 23758968