@article{4c10f5951ab1409589d5ac824c4887aa,
title = "Cation intermixing and electronic deviations at the insulating LaCrO3/SrTiO3(001) interface",
abstract = "The interface between polar perovskite LaCrO3 and nonpolar SrTiO3(001) grown by molecular beam epitaxy is examined using a combination of electron microscopy, spectroscopy, and Rutherford backscattering spectrometry. The A-site cations of these ABO(3) perovskites are found to diffuse across the interface to a greater extent than the B-site cations, based on high-angle annular dark-field scanning transmission electron microscopy, energy-dispersive x-ray spectroscopy, and electron-energy-loss spectroscopy (EELS). The B-site cation valences are shown to be partially reduced near the interface by analysis of EELS near-edge structures. The location and direction of these electronic modifications do not intuitively compensate the charge imbalance imposed by uneven cation interdiffusion, and yet both the film and interface are insulating. These results highlight the importance of considering both the physical and electronic structure of such complex interfaces in determining their characteristics.",
keywords = "energy-loss spectroscopy, oxide interfaces, stoichiometry, chromium, srtio3, growth, charge, tem",
author = "R Colby and L Qiao and Zhang, {K H L} and V Shutthanandan and J Ciston and B Kabius and Chambers, {S A}",
note = "ISI Document Delivery No.: 242VN Times Cited: 5 Cited Reference Count: 42 Colby, R. Qiao, L. Zhang, K. H. L. Shutthanandan, V. Ciston, J. Kabius, B. Chambers, S. A. US Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [10122 (MBE and RBS)]; Department of Energy's Office of Biological and Environmental Research at Pacific Northwest National Laboratory; National Center for Electron Microscopy, Lawrence Berkeley National Laboratory; DOE BES [DE-AC02-05CH11231]; EMSL William Wiley Postdoctoral Fellowship program Thanks are extended to T. Droubay for useful discussions. This work was supported by the US Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Award No. 10122 (MBE and RBS), and the EMSL William Wiley Postdoctoral Fellowship program. The work was performed in the Environmental Molecular Sciences Laboratory, a national science user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory. The authors also acknowledge support of the National Center for Electron Microscopy, Lawrence Berkeley National Laboratory, which is supported by the DOE BES under Contract No. DE-AC02-05CH11231. Amer physical soc College pk",
year = "2013",
doi = "10.1103/PhysRevB.88.155325",
language = "English",
volume = "88",
journal = "Physical Review B",
issn = "2469-9969",
publisher = "American Physical Society",
number = "15",
}