Flavio Y. Bruno, Rainer Schmidt, Maria Varela, Javier Garcia-Barriocanal, Alberto Rivera-Calzada, Fabian A. Cuellar, Carlos Leon, Pardeep Thakur, Julio C. Cezar, Nicholas B. Brookes, Mar Garcia-Hernandez, Elbio Dagotto, Stephen J. Pennycook and Jacobo Santamaria Electron Doping by Charge Transfer at LaFeO3/Sm2CuO4 Epitaxial Interfaces Advanced Materials 25
Version of Record online: 4 JAN 2013 | DOI: 10.1002/adma.201203483
Using X-ray absorption spectroscopy and electron energy loss spectroscopy with atomic-scale spatial resolution, experimental evidence for charge transfer at the interface between the Mott insulators Sm2CuO4 and LaFeO3 is obtained. As a consequence of the charge transfer, the Sm2CuO4 is doped with electrons and thus epitaxial Sm2CuO4/LaFeO3 heterostructures become metallic.
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