High-T_{c} Superconductivity at the Interface between the CaCuO_{2} and SrTiO_{3} Insulating Oxides

Author(s): D. Di Castro, C. Cantoni, F. Ridolfi, C. Aruta, A. Tebano, N. Yang, and G. Balestrino

CaCuO${}_2$/SrTiO${}_3$ heterostructures show interface superconductivity at $40$K due to extra oxygen ions in the interface Ca plane, which act as doping holes.

[Phys. Rev. Lett. 115, 147001] Published Mon Sep 28, 2015