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  • Title: Surface octahedral distortions and atomic design of perovskite interfaces.
    Author: Petrov AY, Torrelles X, Verna A, Xu H, Cossaro A, Pedio M, Garcia-Barriocanal J, Castro GR, Davidson BA.
    Journal: Adv Mater; 2013 Aug 07; 25(29):4043-8. PubMed ID: 23813784.
    Abstract:
    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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