Local Structure of FeSe 0.4 Te 0.6  by Low‐Temperature X‐Ray Fluorescence Holography | Zendy

Stellhorn Jens Rüdiger | Zendy; Ideguchi Yuki | Zendy; Kimura Koji | Zendy; Hayashi Kouichi | Zendy; Happo Naohisa | Zendy; Suzuki Motohiro | Zendy; Okazaki Hiroyuki | Zendy; Yamashita Aichi | Zendy; Takano Yoshihiko | Zendy; Hosokawa Shinya | Zendy

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Local Structure of FeSe 0.4 Te 0.6 by Low‐Temperature X‐Ray Fluorescence Holography

Author(s) -

Stellhorn Jens Rüdiger,

Ideguchi Yuki,

Kimura Koji,

Hayashi Kouichi,

Happo Naohisa,

Suzuki Motohiro,

Okazaki Hiroyuki,

Yamashita Aichi,

Takano Yoshihiko,

Hosokawa Shinya

Publication year - 2018

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.201800093

Subject(s) - x ray absorption fine structure , holography , materials science , lattice (music) , fluorescence , local structure , superconductivity , x ray , condensed matter physics , crystallography , optics , physics , spectroscopy , chemistry , quantum mechanics , acoustics

We present low‐temperature X‐ray fluorescence holography experiments to investigate the atomic scale structure of the high‐temperature superconductor FeSe 0.4 Te 0.6 . The results present a direct investigation of the local structure around the Fe atoms. Very clear images of the structure are obtained by a sparse modeling approach to the experimental data using a L 1 ‐regularized linear regression. The results are in good agreement with previous findings of XRD and XAFS experiments on the FeSe 1− x Te x system, but furthermore indicate large fluctuations in the Fe sub‐lattice. The findings also represent a starting point for further discussions on more curious features of the FeSe 1− x Te x structure.

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