Growth and anisotropic properties of superconducting La2-xCa1+xCu2O6-x/2+δ single crystals

Takao Watanabe, Takao Ishii, Kyoichi Kinoshita, Azusa Matsuda

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Single crystals of La2-xCa1+xCu2O6-x/2+δ have been grown by the CuO flux method. After annealing under a high partial pressure of O2, these crystals showed zero resistance at 41 K and a perfect shielding effect (3% Meissner signal). These crystals also showed metallic behaviour parallel (a,b) and perpendicular (c) to the basal plane, with an anisotropy of about 30 at room temperature. The Ginzburg-Landau coherence lengths were estimated from Hc2 measurements: ξab=33 A ̊ and ξc=12 A ̊. The anisotropy factor of 3 is fairly small for a high-Tc superconductor.

Original languageEnglish
Pages (from-to)1235-1236
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume185-189
Issue numberPART 2
DOIs
Publication statusPublished - 1991 Dec 1
Externally publishedYes

ASJC Scopus subject areas

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

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