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X-ray Fluorescence Holographic Study on High-Temperature Superconductor FeSe0.4Te0.6
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December 11, 2015
Abstract
To observe the difference of atomic heights between the Se and Te layers with respect to the Fe layer in FeSe0.4Te0.6 single crystal, a Fe Kα fluorescence X-ray holography (XFH) experiment was performed at room temperature. The crystal structure of superconductor FeSe0.4Te0.6 obtained by X-ray diffraction (XRD) at a low temperature has distinct z-coordinates of Se and Te, remarkably different from each other. The reconstructed atomic image around central Fe atoms by XFH, however, reveals the different and complex results.
Keywords: Superconductor; FeSeTe; X-ray Fluorescence Holography; Chalcogen Height; Local Atomic Structure; Positional Fluctuations; Atomic Image
Acknowledgement
The XFH experiment was carried out at BL39XU/Spring-8 (Nos. 2014B1187 and 2015B1183). This work was supported by JSPS Grant-in-Aid for Scientific Research on Innovative Areas “3D Active-Site Science” (No. 26105006).
Received: 2015-7-30
Accepted: 2015-11-18
Published Online: 2015-12-11
Published in Print: 2016-4-28
©2015 Walter de Gruyter Berlin/Boston
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Keywords for this article
Superconductor;
FeSeTe;
X-ray Fluorescence Holography;
Chalcogen Height;
Local Atomic Structure;
Positional Fluctuations;
Atomic Image
Articles in the same Issue
- Frontmatter
- Preface
- Element Specific Structure Determination Using Modern X-ray and Neutron Techniques
- Fast Calculation Algorithm Using Barton's Method for Reconstructing Three-Dimensional Atomic Images from X-ray Fluorescence Holograms
- Matrix Effects in X-ray Fluorescence Holography: Samples of Arbitrary Thickness
- Atomic Structure Imaging in ZnSe and Mixed Zn0.74Mn0.2Be0.06Se Crystals with X-ray Fluorescence Holography
- X-ray Fluorescence Holographic Study on High-Temperature Superconductor FeSe0.4Te0.6
- Crystalline Quality and Structure of MBE-Grown Ferromagnetic Semiconductor ZnSnAs2:Mn Thin Films Revealed by High-Resolution X-ray Diffraction Measurements
- X-ray Fluorescence Holography for a Ti–Nb Binary Alloy Consisting of the Martensite, Austenite and Omega Phase
- Circular Dichroism in Cu Resonant Auger Electron Diffraction
- The Use of X-ray Absorption Spectra for Validation of Classical Force-Field Models
- Local Structure of Cobalt Tungstate Revealed by EXAFS Spectroscopy and Reverse Monte Carlo/Evolutionary Algorithm Simulations
- Confirmation of no Structural and Chemical Changes in Curie Temperature Variable Co Ultrathin Films by Electric Field
- Dynamical Response of the Electric Double Layer Structure of the DEME-TFSI Ionic Liquid to Potential Changes Observed by Time-Resolved X-ray Reflectivity
