Figure 4
From: Homoepitaxial SrTiO3(111) Film with High Dielectric Performance and Atomically Well-Defined Surface

(a) The schematic drawing of the Au/Cr/SrTiO3/Nb-SrTiO3 capacitor structure. (b) The leakage current density at different electric field, (c) the capacitance at different bias and (d) the charge density modulation range with different gate voltage measured at 6 K, respectively.