In-situ spectroscopic studies and interfacial engineering on FeSe/oxide heterostructures: Insights on the interfacial superconductivity*
Peng Ruia),b), Xu Hai-Chaoa),b), Feng Dong-Laia),b)
       
(a) Illustration of the epitaxial strain and charge transfer at the FeSe/oxide interface, and the lattice relaxation and chemical doping in thick FeSe films. (b) Illustration of modifying the epitaxial strain and chemical composition of the oxide layer. (c1)–(c4) The illustration of heterostructures designed for tuning the epitaxial strain and changing the composition of the FeSe/oxide interface in Ref. [15].