Reversible-magnetization derived London penetration depth of κ-(BEDT-TTF)2X for X=Cu(NCS)2 and X=Cu[N(CN)2]Br: No indication for unconventional superconductivity

M. Lang, Naoki Toyota, T. Sasaki

研究成果: Article査読

15 被引用数 (Scopus)

抄録

In this paper we summarize our recent results on the magnetic penetration depth λ of the title organic superconductors. Using the London model, we determine the temperature dependence of λ from the slope of the linear M(lnH) dependence of the reversible isothermal magnetization. For both salts the in-plane London penetration depth shows only a weak T dependence at low temperature in excellent agreement with a conventional order parameter. Our results are incompatible with any of the unconventional pairing schemes proposed by Kanoda et al. and Le et al.. It is also the intention of this paper to address experimental difficulties in determining the magnetic penetration depth, in particular, the influence of extrinsic factors as temperature dependent flux pinning and demagnetization effects on the various experimental techniques.

本文言語English
ページ(範囲)2401-2408
ページ数8
ジャーナルSynthetic Metals
56
1
DOI
出版ステータスPublished - 1993 3月 29

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
  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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