Vortex lock-in transition in Tl2Ba2CuO6 superconductor and vortex phase diagram

Gunadhor S. Okram, Haruyoshi Aoki, Ming Xu, David G. Hinks

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Lock-in transition in good quality over-doped Tl2Ba2CuO6 crystals has been investigated. As the c-axis angle θ with the magnetic field H approaches 90°, the flux flow resistivity ρ(θ) exhibits a sharp drop, a dip and a peak. These features were observed for a particular range of H and temperatures T and they have been assigned to the vortex phase transitions of different types. These enabled us to identify the associated vortex phase diagrams, viz. the θ-t and θ-H phase diagrams, where t is the reduced temperature T/Tc We made an attempt to fit the data with the available theories and to discuss the results.

Original languageEnglish
Pages (from-to)65-76
Number of pages12
JournalPhysica C: Superconductivity and its applications
Volume355
Issue number1-2
DOIs
Publication statusPublished - 2001 Jun 1

Keywords

  • Cu-O planes
  • Flux flow
  • Magneto-resistivity
  • Phase-diagram
  • TlBaCuOcrystal

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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