PHYSICAL REVIEW MATERIALS 4, 026001 (2020) Co valence transformation in isopolar LaCoO3/LaTiO3 perovskite heterostructures via interfacial engineering

Georgios Araizi-Kanoutas ,1,*,† Jaap Geessinck ,2,* Nicolas Gauquelin,3 Steef Smit,1 Xanthe H. Verbeek,1 Shrawan K. Mishra,4 Peter Bencok,5 Christoph Schlueter ,6 Tien-Lin Lee,5 Dileep Krishnan,3 Jarmo Fatermans,3,7 Jo Verbeeck,3 Guus Rijnders,2 Gertjan Koster ,2 and Mark S. Golden1,‡ 1Van der Waals–Zeeman Institute for Experimental Physics, Institute of Physics, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, Netherlands 2MESA+ Institute for Nanotechnology, University of Twente, Faculty of Science and Technology, P.O. Box 217, 7500 AE Enschede, Netherlands 3Electron Microscopy for Materials Science, University of Antwerp, Campus Groenenborger, Groenenborgerlaan 171, 2020 Antwerpen, Belgium 4School of Materials Science and Technology, Indian Institute of Technology (BHU), Varanasi 221 005, India 5Diamond Light Source, Limited, Diamond House, Harwell Science and Innovation Campus, Didcot OX11 0DE, United Kingdom 6PETRA III, DESY Photon Science, Notkestrasse 85, 22607 Hamburg, Germany 7Imec-Vision Lab, University of Antwerp, Campus Drie Eiken, Universiteitsplein 1, 2610 Wilrijk, Belgium