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A. Yu. Petrov, X. Torrelles, A. Verna, H. Xu, A. Cossaro, M. Pedio, J. Garcia-Barriocanal, G. R. Castro and B. A. Davidson Surface Octahedral Distortions and Atomic Design of Perovskite Interfaces Advanced Materials 25

Version of Record online: 28 JUN 2013 | DOI: 10.1002/adma.201301841

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Atomic engineering of perovskite films and interfaces is significantly improved by in situ optimization of reflection high-energy electron diffraction (RHEED) features resulting from surface BO6 octahedral rotations seen during molecular-beam epitaxy growth. This approach yields Sr-doped manganite films across the phase diagram with magnetotransport properties that are, for the first time, identical to bulk single crystals. Careful structural analysis of manganite/titanate interfaces shows that cation intermixing and unit cell dilations are eliminated, while BO6 rotations and Jahn-Teller-type elongations are nearly completely suppressed at the interface.

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