Figure 5
From: Chemical termination and interfacial redox behavior of freestanding SrTiO3

(a) XPS spectra around the Ti 2p core level for 5 uc LAO on a 20 nm thick STO layer transferred to an \(\hbox {Al}_2\) \(\hbox {O}_3\) host substrate. The STO layer was terminated and annealed prior to the LAO deposition. (b) Schematic of interfacial redox behavior between freestanding STO membrane and LAO layer.