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Quasicrystals and their Approximants in 2D Ternary Oxides

  • 2D oxide quasicrystals (OQCs) are recently discovered aperiodic, but well-ordered oxide interfaces. In this topical review, an introduction to these new thin-film systems is given. The concept of quasicrystals and their approximants is explained for BaTiO3 and SrTiO3 derived OQCs and related periodic structures in these 2D oxides. In situ microscopy unravels the high-temperature formation process of OQCs on Pt(111). The dodecagonal structure is discussed regarding tiling statistics and tiling decoration based on the results of atomically resolved scanning tunneling microscopy and various diffraction techniques. In addition, angle-resolved ultraviolet photoemission spectroscopy and X-ray photoelectron spectroscopy results prove a metallic character of the 2D oxide.

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Author: Stefan FörsterORCiD, Sebastian Schenk, Eva Maria Zollner, Oliver Krahn, Cheng-Tien ChiangORCiD, Florian O. Schumann, Alireza Bayat, Karl-Michael Schindler, Martin Trautmann, René Hammer, Klaus Meinel, Waheed A. AdeagboORCiD, Wolfram Hergert, Jan Ingo FlegeORCiD, Jens FaltaORCiD, Martin Ellguth, Christian TuscheORCiD, Marc DeBoissieu, Matthias MuntwilerORCiD, Thomas Gerber, Wolf WiddraORCiD
DOI:https://doi.org/10.1002/pssb.201900624
ISSN:0370-1972
ISSN:1521-3951
Title of the source (English):Physia Status Solidi B
Document Type:Scientific journal article peer-reviewed
Language:English
Year of publication:2020
Tag:approximants; dodecagonal oxide quasicrystals; oxide quasicrystals; tiling statistics
Volume/Year:257
Issue number:7
Number of pages:11
Article number:1900624
Faculty/Chair:Fakultät 1 MINT - Mathematik, Informatik, Physik, Elektro- und Informationstechnik / FG Angewandte Physik und Halbleiterspektroskopie
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