Figure 3
From: On the emergence of conductivity at SrTiO3-based oxide interfaces – an in-situ study
(a) No measurable conductivity change is found for Sapphire covered substrates, the conductivity remains at the measurement limit throughout the deposition time. (b) Annealing experiments illustrating the effect of oxygen on the sheet resistance. After 3 initial laser pulses samples turn conducting and decay in 2 × 10−6 mbar of Oxygen. The arrow in the figures show the onset of oxygen flushing to 5 × 10−2 mbar into the chamber, and the samples turn insulating rapidly.
