The role of double TiO2 layers at the interface of FeSe/SrTiO3 superconductors

Ke Zou, Subhasish Mandal, Stephen Albright +14

We determine the surface reconstruction of SrTiO3 used to achieve superconducting FeSe films in experiments, which is different from the 1x1 TiO2 terminated SrTiO3 assumed by most…