Probing the band alignment in rectifying SrIrO3/Nb:SrTiO3 heterostructures

[1 ]Department of Electrical Engineering, Stanford University, Stanford, California 94305, USA

[2 ]Geballe Laboratory for Advanced Materials, Department of Applied Physics, Stanford University, 476 Lomita Mall, Stanford, California 94305, USA

[3 ]Department of Inorganic Materials Science, Faculty of Science and Technology and MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands

[4 ]Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA