Vortex fluctuation of grain-aligned HgBa2Ca2Cu3O8+δ

Myoung Kwang Bae, M. S. Choi, Mi Ock Mun, Sergey Lee, Sung Ik Lee, W. C. Lee

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

We have measured the reversible magnetization M(H, T) for grain-aligned HgBa2Ca2Cu3O8+δ. Our data exhibit a clear vortex fluctuation about 6 K below the superconducting onset temperature. The derived in-plane magnetic penetration depth λab(0) is 1700 Å which is similar to those of other high-Tc superconductors. In addition, the zero-temperature GL coherence length ξab (0) is 22±5 Å, which implies GL parameter κ{script}=77±13. This κ{script} is much greater than that of HgBa2CuO6, but similar to that of YBa2Cu3O7.

Original languageEnglish
Pages (from-to)195-198
Number of pages4
JournalPhysica C: Superconductivity and its Applications
Volume228
Issue number1-2
DOIs
Publication statusPublished - 1994 Jul 10
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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