Evidence of d-wave behavior in Pr1.85Ce0.15CuO3.97 aligned superconductors

H. C. Ku, Yung-Yuan Hsu, B. C. Chang, B. N. Lin, H. C. Chiang, T. J. Yang

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The c-axis and in-plane alignment of 23 K Pr1.85Ce0.15CuO3.97 superconducting powder were achieved with powder/epoxy cylindrical holder perpendicular and parallel to the alignment field. The temperature dependencies of basal-plane penetration depth λab(T) and c-axis Josephson penetration depth λc(T) were derived using zero-field-cooled diamagnetic susceptibility χd(T) in a low applied field (Ba < Hc1) parallel or perpendicular to the aligned powder where small Pr Curie-Weiss paramagnetic susceptibility χp(T) was subtracted. Up to 0.5Tc, Δλab(T) = λab(T) - λab(0) as well as Josephson Δλc(T) can be well fitted with a d-wave-like power law c2T2 + c4T4, where T2-term is dominated below 0.3Tc. The present result agrees with recent phase-sensitive experiment, which indicates d-wave nature for electron-doped R1.85Ce0.15CuO4-δ (R = Pr, Nd) cuprates.

Original languageEnglish
Pages (from-to)285-288
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume364-365
DOIs
Publication statusPublished - 2001 Nov 1

Keywords

  • Electron-doped cuprate
  • High-T superconductor
  • d-wave symmetry

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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