論文

査読有り
2016年2月2日

Nematic magnetoelastic effect contrasted between Ba(Fe1-xCox)2As2 and FeSe

Physical Review B
  • Yuwen Hu
  • Xiao Ren
  • Rui Zhang
  • Huiqian Luo
  • Shigeru Kasahara
  • Tatsuya Watashige
  • Takasada Shibauchi
  • Pengcheng Dai
  • Yan Zhang
  • Yuji Matsuda
  • Yuan Li
  • 全て表示

93
6
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1103/PhysRevB.93.060504
出版者・発行元
American Physical Society

To elucidate the origin of nematic order in Fe-based superconductors, we report a Raman scattering study of lattice dynamics, which quantify the extent of C4-symmetry breaking, in BaFe2As2 and FeSe. FeSe possesses a nematic ordering temperature Ts and orbital-related band-energy split below Ts that are similar to those in BaFe2As2, but unlike BaFe2As2 it has no long-range magnetic order. We find that the Eg phonon-energy split in FeSe becomes substantial only well below Ts, and its saturated value is much smaller than that in BaFe2As2. Together with reported results for the Ba(Fe1-xCox)2As2 family, the data suggest that magnetism exerts a major influence on the lattice.

リンク情報
DOI
https://doi.org/10.1103/PhysRevB.93.060504
ID情報
  • DOI : 10.1103/PhysRevB.93.060504
  • ISSN : 2469-9969
  • ISSN : 2469-9950
  • SCOPUS ID : 84958231544

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