Anisotropy in superconductivity and magnetism of PrFeAsO 1-δ single crystal

Daichi Kubota, Takekazu Ishida, Motoyuki Ishikado, Shin Ichi Shamoto, Hiroshi Eisaki, Hijiri Kito, Akira Iyo

研究成果: Article同行評審

摘要

The magnetic torque of a high-quality PrFeAsO 1-δ single crystal has been investigated at temperatures from 2 to 200 K in 1 and 5 T. The superconducting anisotropy in PrFeAsO 1-δ can well be approximated by the single-band Kogan torque theory. The superconducting anisotropy of PrFeAsO 1-δ determined by analyzing the torque curve is weakly dependent upon changing temperature. The magnetism contribution to the torque from magnetic Pr ions becomes appreciable compared to the superconducting component. We argue that the Pr ions in the superconducting PrFeAsO 1-δ single crystal show an antiferromagnetic spin ordering at 14 K. The spin structure thus reduced from the torque measurements is different from what neutron diffraction measurements predicted using polycrystalline specimen.

原文English
頁(從 - 到)1067-1070
頁數4
期刊Journal of Superconductivity and Novel Magnetism
23
發行號6
DOIs
出版狀態Published - 2010 8月

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學

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