Direct evidence of spontaneous creation of flux lines in Tl2Ba2Cu1O6 superconductors

D. Vacaru, F. Zuo, H. M. Duan, A. M. Hermann

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

We report magnetization studies on single crystals of Tl2Ba2Cu1O6 superconductors. For magnetic field parallel to the c-axis configuration, low-field magnetization measurements show Hc1=0 at Ts=86.5 K while the mean-field transition temperature Tc0=88.8 K. The transition width in zero-field-cooled magnetization increases linearly with field, but with a finite intercept at H=0, consistent with the Hc1=0 measurements. The experimental results strongly suggest the Tl-compound is Josephson coupled between superconducting layers, and our results provide direct evidence of the spontaneous excitations of flux lines in this system.

Original languageEnglish (US)
Pages (from-to)393-397
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume203
Issue number3-4
DOIs
StatePublished - Dec 10 1992

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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