Figure 3
(a) SrTiO3 (100) and LaAlO3 (100) in a LaAlO3||SrTiO3 system where the SrTiO3 substrate is TiO2-terminated after hydrofluoric acid etching. (b) SrTiO3 (100) and LaAlO3 (100) in a LaAlO3||SrTiO3 system without pre-treatment of the substrate. Both samples are represented by the same intensity scheme for comparison. |