Reference : The origin of two-dimensional electron gases at oxide interfaces: insights from theory
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/170355
The origin of two-dimensional electron gases at oxide interfaces: insights from theory
English
Bristowe, Nicholas mailto [Université de Liège - ULiège > Département de physique > Physique théorique des matériaux >]
Ghosez, Philippe mailto [Université de Liège - ULiège > Département de physique > Physique théorique des matériaux >]
Littlewood, P.B. []
Artacho, E. []
2014
Journal of Physics: Condensed Matter
Institute of Physics
26
143201
Yes (verified by ORBi)
International
0953-8984
1361-648X
Bristol
United Kingdom
[en] oxide interfaces and surfaces ; polar discontinuity ; two-dimensional electron gas
[en] 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 quasi-two-dimensional, switchable, magnetic and/or superconducting. Despite these findings, the origin of the two-dimensional 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.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/170355
10.1088/0953-8984/26/14/143201

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