The interface between LaAlO3 and SrTiO3, two good band insulators, was found to be conducting
, and, in some doping range, superconducting with a maximum critical temperature of about 300
I will discuss in this presentation the electronic structure, superconductivity, and the Tc versus
doping phase diagram of LaAlO3/SrTiO3 and ((LaAlO3)0.5-(SrTiO3)0.5)-SrTiO3 interfaces. I will
also compare superconductivity at these interfaces with superconductivity in bulk doped SrTiO3 .
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