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. 2012 May 30;109(25):9710-9715. doi: 10.1073/pnas.1117990109

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Fig. 1. — Schematic model and experimental design of two possible heterointerfaces between LSMO and BFO layers. Schematics of atomic stacking sequence for LSMO/BFO heterostructures with La_0.7Sr_0.3O-MnO₂-BiO-FeO₂ (A) and MnO₂-La_0.7Sr_0.3O-FeO₂-BiO (B) interfaces. The sheet charge density for each layer has been assigned following the nominal bulk valence. The arrows indicate the as-grown directions of the ferroelectric polarizations in BFO layers. (C) RHEED intensity oscillations of the specular reflected beam during the growth of SrRuO₃ and La_0.7Sr_0.3MnO₃ on the TiO₂-terminated SrTiO₃ (001) surface. (D) TOF-ISARS spectra of MnO₂- and La_0.7Sr_0.3O-terminated La_0.7Sr_0.3MnO₃ thin films.