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CO adsorption on Co(0001) revisited: high-coverage CO superstructures on the close-packed surface of cobalt. J Catal 2022. [DOI: 10.1016/j.jcat.2022.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Günther S, Zeller P, Böller B, Wintterlin J. Method for the Manual Analysis of Moiré Structures in STM images. Chemphyschem 2021; 22:870-884. [PMID: 33942453 PMCID: PMC8252427 DOI: 10.1002/cphc.202001034] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 02/19/2021] [Indexed: 11/09/2022]
Abstract
A method is presented to manually determine the lattice parameters of commensurate hexagonal moiré structures resolved by STM. It solves the problem that lattice parameters of moiré structures usually cannot be determined by inspection of an STM image, so that computer-based analyses are required. The lattice vector of a commensurate moiré structure is a sum of integer multiples both of the two basis vectors of the substrate and of the adsorbed layer. The method extracts the two factors with respect to the adsorbed layer from an analysis of the Fourier transform of an STM image. These two factors are related to the two factors with respect to the substrate layer. Using the cell augmentation method, six possible moiré structures are identified by algebra. When the orientation and lattice constant of the substrate are roughly known, this information is usually sufficient to determine a unique moiré structure and its lattice parameters.
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Affiliation(s)
- Sebastian Günther
- Fakultät für Chemie, Technische Universität München, Lichtenbergstr. 4, 85748, Garching, Germany
| | - Patrick Zeller
- Elettra - Sincrotrone Trieste S.C.p.A., SS14 - km 163.5, 34149, Basovizza, Trieste, Italy.,Current address: Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, BESSY II, Albert-Einstein-Straße 15, 12489, Berlin, Germany.,Fritz-Haber-Institut der Max-Planck-Gesellschaft, Dept. Inorganic Chemistry, Faradayweg 4-6, 14195, Berlin, Germany
| | - Bernhard Böller
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, Munich, Germany.,Center for NanoScience, Schellingstr. 4, 80799, Munich, Germany
| | - Joost Wintterlin
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, Munich, Germany.,Center for NanoScience, Schellingstr. 4, 80799, Munich, Germany
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