Effect of structural symmetry on the magnetic and superconducting properties in La1.875Ba0.125-xSrxCuO4

H. Goka, M. Fujita, Y. Ikeda, K. Yamada

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

We investigate interplay among magnetism, superconductivity and crystal structure of 1/8-doped La1.875 Ba0.125-xSrxCuO4 using single crystals. A step-like change in the superconducting transition temperature Tc takes place at a specific Sr concentration around x = 0.08. In the lower concentration region (x ≤ 0.075), Tc, is remarkably suppressed to around 10 K and weakly depends on x. Furthermore, a structural phase transition from low temperature orthorhombic (LTO) to low temperature tetragonal or Pccn phase occurs. At the transition an anomalous upturn of magnetic susceptibility is observed upon cooling under a magnetic field perpendicular to CuO2 plane. On the other hand, in the LTO phase with higher Sr concentration (x ≥ 0.085), Tc is nearly constant around 30 K.

Original languageEnglish
Pages (from-to)256-259
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume357-360
Issue numberSUPPL. 2
DOIs
Publication statusPublished - 2001 Aug
Externally publishedYes

Keywords

  • 1/8 problem
  • LBSCO
  • LTO-LTT/Pccn transition
  • Magnetic susceptibility
  • Single crystal

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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