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Identification of two-dimensional FeO.sub.2./sub. termination of bulk hematite alpha-Fe.sub.2./sub.O.sub.3./sub.(0001) surface
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SYSNO ASEP 0517446 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Identification of two-dimensional FeO2 termination of bulk hematite alpha-Fe2O3(0001) surface Author(s) López, Roso Redondo Jesús R. (FZU-D) ORCID
Lazar, P. (CZ)
Procházka, P. (CZ)
Průša, S. (CZ)
Mallada Faes, Benjamin Jose (FZU-D) ORCID, RID
Cahlík, Aleš (FZU-D)
Lachnitt, J. (CZ)
Berger, Jan (FZU-D) RID
Šmíd, B. (CZ)
Kormos, L. (CZ)
Jelínek, Pavel (FZU-D) RID, ORCID
Čechal, J. (CZ)
Švec, Martin (FZU-D) RID, ORCIDNumber of authors 13 Source Title Journal of Physical Chemistry C. - : American Chemical Society - ISSN 1932-7447
Roč. 123, č. 23 (2019), s. 14312-14318Number of pages 7 s. Language eng - English Country US - United States Keywords oxide-films ; in-situ ; iron ; oxygen ; atmosphere ; catalysis ; growth Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) R&D Projects GJ17-24210Y GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support FZU-D - RVO:68378271 UT WOS 000471834000024 EID SCOPUS 85067447476 DOI 10.1021/acs.jpcc.9b00244 Annotation Iron oxides are among the most abundant compounds on Earth and have been exploited and researched extensively. Knowing the atomic structure of their surfaces is essential for the understanding and control of their catalytic properties, electronic character, and spin arrangement. By the combination of atomically resolved microscopy, electron diffraction, and surface-sensitive spectroscopies, we examine the oxygen-rich superstructure grown on an alpha-Fe2O3 (0001) hematite surface and reveal a continuous two-dimensional layer of iron dioxide, structurally analogous to transition metal dichalcogenides. Using total-energy density functional simulation to optimize an atomic model of the superstructure, we identify it as antiferromagnetic and conductive 1T-FeO2 attached on half-metal terminated bulk. These results open the way to the identification of epitaxial 2D layers on other similar metal-oxide surfaces and to a better understanding of their catalytic activity. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2020 Electronic address https://doi.org/10.1021/acs.jpcc.9b00244
Number of the records: 1