Terahertz conductivity measurement of FeSe0.5Te0.5 and Co-doped BaFe2As2 thin films

D. Nakamura, T. Akiike, H. Takahashi, F. Nabeshima, Y. Imai, A. Maeda, T. Katase, H. Hiramatsu, H. Hosono, S. Komiya, I. Tsukada

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

The terahertz (THz) conductivity of FeSe0.5Te0.5 ('11'-type) and Co-doped BaFe2As2 ('122'-type) thin films are investigated. For '11'-type, the frequency dependence of the complex conductivity can be understood as that of BCS-type superconductor near the superconducting gap energy, and we estimated the superconducting gap energy to be 0.6 meV. For '122'-type, we estimated the superconducting gap energy to be 2.8 meV, which is considered to be the superconducting gap opened at the electron-type Fermi surface near the M point.

Original languageEnglish
Pages (from-to)634-638
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume471
Issue number21-22
DOIs
Publication statusPublished - 2011 Nov 1
Externally publishedYes

Keywords

  • BaFeAs
  • FeSe
  • THz conductivity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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