@article{b6cc0fe5af4843e9aa8191a32083ef52,
title = "Polarity-driven oxygen vacancy formation in ultrathin LaNiO3 films on SrTiO3",
abstract = "Oxide heterostructures offer a pathway to control emergent phases in complex oxides, but their creation often leads to boundaries that have a polar discontinuity. In order to fabricate atomic-scale arrangements of dissimilar materials, we need a clear understanding of the pathways by which materials resolve polarity issues. By examining the real-time lattice structure in situ during growth for the case of polar LaNiO3 synthesized on nonpolar SrTiO3 (001), we demonstrate how films in ultrathin limit form as LaNiO2.5 and then evolve into LaNiO3 as the thickness increases. Theory explains how the polar energetics drives the formation of oxygen vacancies and the stability of these phases with thickness and structure.",
author = "Tung, {I. Cheng} and Guangfu Luo and Lee, {June Hyuk} and Chang, {Seo Hyoung} and Jarrett Moyer and Hawoong Hong and Bedzyk, {Michael J.} and Hua Zhou and Dane Morgan and Fong, {Dillon D.} and Freeland, {John W.}",
note = "Funding Information: Work at the Advanced Photon Source, Argonne was supported by the U.S. Department of Energy, Office of Science under Grant No. DEAC02-06CH11357. In situ x-ray measurements were supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. G.L. and D.M. were partially supported by University of Wisconsin Materials Research Science and Engineering Center (DMR-1121288). Computing resources in this work benefited from the use of the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by National Science Foundation Grant No. ACI-1053575, and the compute resources and assistance of the UW-Madison Center For High Throughput Computing (CHTC) in the Department of Computer Sciences. Publisher Copyright: {\textcopyright} 2017 American Physical Society.",
year = "2017",
month = oct,
day = "18",
doi = "10.1103/PhysRevMaterials.1.053404",
language = "English (US)",
volume = "1",
journal = "Physical Review Materials",
issn = "2475-9953",
publisher = "American Physical Society",
number = "5",
}