Multi-band nature of superconducting anisotropy in PrFeAsO 1-δ single crystal

D. Kubota, T. Ishida, M. Ishikado, S. Shamoto, H. Eisaki, H. Kito, A. Iyo

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1 Citation (Scopus)

Abstract

We investigated the magnetic torque of superconducting PrFeAsO 1 δ single crystal using the torque magnetometer at temperatures from 2 K to 200 K in magnetic field of 30 kG. The torque curve tends to have a singular shape compared to other superconductors. The analyses of the PrFeAsO1 δ torque curves by the single-band and the multi-band Kogan model yield 3 < γλ > 5 in 30 kG. With the aid of the multi-band Kogan model, however, we obtain γλ = 0.79 ± 0.01 and γλ = 19 ± 3 in 30 kG at 20.5 K. The smallness of γ ζ(<1) thus obtained is due to the multi-band nature of the iron pnictide.

Original languageEnglish
Pages (from-to)1109-1111
Number of pages3
JournalPhysica C: Superconductivity and its applications
Volume470
Issue number20
DOIs
Publication statusPublished - 2010 Nov 1

All Science Journal Classification (ASJC) codes

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

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