Inter-granular current in iron-oxypnictide superconductors

T. Tamegai, Y. Tsuchiya, Y. Nakajima, Y. Kamihara, H. Hosono

研究成果: Article査読

3 被引用数 (Scopus)

抄録

Inter- and intra-granular currents, Jcinter and Jcintra, in LaFePO0.94F0.06 polycrystalline sample are evaluated by measuring the remanent-state field profile using magneto-optical imaging method. Obtained images show the absence of magnetic field modulation associated with the weak-link nature of grain boundaries, indicating that Jcinter and Jc intra are comparable in magnitude in contrast to other iron-arsenide superconductors. Jcinter is estimated to be 2 × 104 A/cm2 in the limit of T= 0 K, which is larger than the values in other iron-arsenide superconductors. Implication of these J c behavior is discussed in relation with possible pairing symmetries.

本文言語English
ページ(範囲)993-995
ページ数3
ジャーナルPhysica C: Superconductivity and its applications
470
20
DOI
出版ステータスPublished - 2010 11 1
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • エネルギー工学および電力技術
  • 電子工学および電気工学

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