Review Interfaces and Surfaces

The European Physical Journal Special Topics

, Volume 222, Issue 5, pp 1177-1183

First online:

2-Dimensional oxide electronic gases: Interfaces and surfaces

  • M. GabayAffiliated withLaboratoire de Physique des Solides, Bât. 510, Université Paris-Sud 11, Centre d’Orsay Email author 
  • , S. GariglioAffiliated withDPMC-MaNEP, University of Geneva
  • , J.-M. TrisconeAffiliated withDPMC-MaNEP, University of Geneva
  • , A.F. Santander-SyroAffiliated withCSNSM, Université Paris-Sud and CNRS/IN2P3

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Numerous solid-state properties depend on the crystal structure. Recently, the idea of searching for novel properties or novel functionalities at artificial interfaces – where a breaking of inversion symmetry and a change in the atomic environment occur – has been developing rapidly and has led to a large new field of research. In this short paper, we will summarize the properties of the 2-d electron gas found at the interface between the two band insulators LaAlO3 and SrTiO3, discuss briefly the recent observations of electron gases at oxide surfaces and examine the possible similarities and differences between these exciting systems.