Paper on SrTiO₃-LaCrO₃ Superlattices Published in Chemistry of Materials

Our work exploring the role of interfacial defects on polarization and conductivity in SrTiO₃-LaCrO₃ superlattices has been published in Chemistry of Materials. In this work, we explore the effects of off-stoichiometry defects and oxygen vacancies on interfacial carriers and polarization in these superlattices. The work was a collaboration during Dr. Comes’ post-doctoral work at Pacific Northwest National Lab, with Steven Spurgeon leading electron microscopy efforts in collaboration with Demie Kepaptsoglou and Quentin Ramasse at the SuperSTEM, Peter Sushko performing density functional theory modeling, and Mark Engelhard performing depth-profile x-ray photoelectron spectroscopy measurements. The multi-dimensional analysis that we apply here should have broad applications to understanding the role of defects in the behavior of superlattice materials, which can be hard to characterize using traditional approaches.