The local structure of the Ca0.9Pr0.1Fe2As2 superconductor as a function of temperature

E. Paris, T. Wakita, L. Simonelli, C. Marini, W. Olszewski, Kensei Terashima, F. Stramaglia, G. M. Pugliese, T. Mizokawa, S. Ioka, Kazutaka Kudo, Minoru Nohara, T. Yokoya, N. L. Saini

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


We have studied the local structure of Ca0.9Pr0.1Fe2As2, showing filamentary superconductivity above 40 K, by a combined analysis of Fe K-edge and As K-edge extended X-ray absorption fine structure measurements. The experiments are performed as a function of temperature exploiting a single crystal sample and in-plane polarization of the X-ray beam to extract information on the directional displacements. The local structure of the FeAs layer is found to be consistent with a regular FeAs4 tetrahedron containing negligible local disorder. Unlike other superconducting systems, we do not find any change in the atomic displacements across the superconducting transition temperature. The results are compatible with electron doping induced intrinsic superconductivity of optimized FeAs4 local structure containing negligible disorder.

Original languageEnglish
Article number095001
JournalSuperconductor Science and Technology
Issue number9
Publication statusPublished - Jul 19 2019


  • Iron-based superconductivity
  • filamentary superconductivity
  • high transition temperature
  • local structure

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry


Dive into the research topics of 'The local structure of the Ca0.9Pr0.1Fe2As2 superconductor as a function of temperature'. Together they form a unique fingerprint.

Cite this