Anisotropic superconducting properties of MgB2 single crystals probed by in-plane electrical transport measurements

Yu Eltsev, S. Lee, K. Nakao, N. Chikumoto, S. Tajima, N. Koshizuka, M. Murakami

研究成果: Article査読

140 被引用数 (Scopus)

抄録

We report on the study of the electronic anisotropy of the MgB2 superconductor using the in-plane resistivity measurements in the magnetic field applied perpendicular and parallel to Mg and B planes of MgB2 single crystals. The results show the temperature dependent anisotropy of the upper critical field with the anisotropy ratio γ = Hc2∥/Hc2⊥ increasing from 2.2 close to Tc up to about 3 below 30 K. Our estimation of the in-plane and out-of-plane coherence length of about ξab(0) = 68 Å and ξc(0) = 23 Å and the electronic mean-free path lab = 240 ̊, and lc = 60 ̊, respectively, indicates MgB2 single crystal approaches the clean limit type-II superconductor.

本文言語English
論文番号140501
ページ(範囲)1405011-1405014
ページ数4
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
65
14
出版ステータスPublished - 2002 4 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

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