e-Journal of Surface Science and Nanotechnology
Online ISSN : 1348-0391
ISSN-L : 1348-0391
Three-dimensional Atomic Image of FeSe High-temperature Superconductor by X-ray Fluorescence Holography
Shinya HosokawaNaohisa HappoKouichi HayashiTomohiro MatsushitaAichi Yamashita
Author information
JOURNAL OPEN ACCESS Advance online publication

Article ID: 2022-001


Fe Kα X-ray fluorescence holography measurements were carried out at room temperature on an FeSe high-temperature superconductor to clarify the relationship between the local structures around the Fe atoms and the superconducting nature. The obtained three-dimensional atomic arrangements strongly reveal a formation of strong FeSe4 clusters. On the other hand, the Se—Fe—Se bond angle largely spreads, causing a large ambiguity in the chalcogen height and large displacements of the Fe sublattice. Thus, it is reasonable that the tetragonal-to-orthorhombic structural (nematic) transition does not affect the magnetic ordering in the Fe layer.

Fullsize Image
Content from these authors

This article is licensed under a Creative Commons [Attribution 4.0 International] license.