Matching effect of vortex lattice in Bi2Sr2CaCu 2O8+y with artificial periodic defects

S. Ooi, T. Mochiku, S. Yu, E. S. Sadki, K. Hirata

Research output: Contribution to journalConference articlepeer-review

31 Citations (Scopus)

Abstract

To study the influence of artificial periodic pinning centers on the vortex matter in high-Tc superconductors, we have measured the local magnetization and the electrical resistance of Bi2Sr 2CaCu2O8+y single crystals with sub-micron holes, which are distributed as a triangular lattice. Both measurements show matching effects in multiples of the matching field calculated from the lattice spacing of the defect array. The maximum field in which the matching effect is observed is larger than the field of the vortex-lattice melting transition in samples without artificial defects. The results suggest the existence of a kind of vortex liquid phase which has an in-plane order.

Original languageEnglish
Pages (from-to)113-117
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume426-431
Issue numberI
DOIs
Publication statusPublished - Oct 1 2005
Externally publishedYes
EventProceedings of the 17th International Symposium on Superconductivity (ISS 2004) Advances in Supeconductivity -
Duration: Nov 23 2004Nov 25 2004

Keywords

  • Artificial periodic defects
  • BiSr CaCuO
  • FIB
  • Matching effect

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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