Effect of the Reversibility Region on the Low Temperature Vortex Structure Imaged by Bitter Magnetic Decoration

F Pardo, Andrew Peter Mackenzie, F de la Cruz, J Guimpel

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10 Citations (Scopus)

Abstract

We have combined magnetic measurements and imaging of the vortex lattice at low fields in Tl2Ba2CuO6-delta single crystals with different oxygen content. Those with high critical temperature T-c > 80 K have a reversible region while those with low T-c < 30 K have an irreversible magnetization in the whole range of temperatures, up to T-c. The presence of the reversible region allows the formation of ordered vortex structures, while amorphous structures are obtained when no reversible region is present below T-c. The results are discussed in terms of vortex nucleation processes in the individual pinning regime.

Original languageEnglish
Pages (from-to)14610-14613
JournalPhysical Review. B, Condensed matter
Volume55
Issue number21
DOIs
Publication statusPublished - 1 Jun 1997

Keywords

  • HIGH-TC SUPERCONDUCTOR
  • ORIENTATIONAL ORDER
  • SINGLE-CRYSTALS
  • LATTICE
  • TL2BA2CUO6+DELTA
  • CHAINS
  • PHASE

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