Scavenging of oxygen vacancies at modulation-doped oxide interfaces: Evidence from oxygen isotope tracing
Scavenging of oxygen vacancies at modulation-doped oxide interfaces: Evidence from oxygen isotope tracing
The introduction of manganite buffer layers, $\mathrm{L}{\mathrm{a}}_{7/8}\mathrm{S}{\mathrm{r}}_{1/8}\mathrm{Mn}{\mathrm{O}}_{3}$ (LSMO) in particular, at the metallic interface between $\mathrm{SrTi}{\mathrm{O}}_{3}$ (STO) and another band insulator suppresses the carrier density of the interfacial two-dimensional electron gas (2DEG) and improves significantly the electron mobility. However, the mechanisms underlying the extreme mobility enhancement remain elusive. Herein, we …