The SrTiO3/LaAlO3 system is widely studied because it forms a two-dimensional electron gas at the interface. This study investigates the effects of diluting the LaAlO3 layer with SrTiO3, and finds that the threshold thickness required for the onset of conductivity scales inversely with the fraction of LaAlO3, suggesting an intrinsic origin for the electron gas.
- M.L. Reinle-Schmitt
- C. Cancellieri
- P.R. Willmott