Evolution of the hyperfine parameters of Fe in superconducting LiFeAs as observed by 57Fe Mössbauer spectroscopy

W. B. Gao, J. Lindén*, X. C. Wang, C. Q. Jin, T. Tohyama, M. Karppinen, H. Yamauchi

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Abstract

The LiFeAs superconductor is studied by 57Fe Mössbauer spectroscopy to detect possible changes in the hyperfine parameters in terms of temperature upon passing the superconductivity-transition-temperature at ∼16 K. With decreasing temperature, a rather fast growth of spectral area and isomer shift below Tc, peaking at ∼6 K was seen. This indicates an increase in the stiffness of the lattice followed by softening.

Original languageEnglish
Pages (from-to)1525-1528
Number of pages4
JournalSolid State Communications
Volume150
Issue number33-34
DOIs
Publication statusPublished - Sep 2010
MoE publication typeA1 Journal article-refereed

Keywords

  • A. Pnictide superconductors
  • D. Lattice softening
  • E. Fe Mössbauer spectroscopy
  • E. Hyperfine interactions

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