Zn-doping effects on the electrical resistivity of La1.85 Sr0.15 CuO4 under a magnetic field

M. Kofu, H. Kimura, H. Ishida, T. Matsumura, K. Hirota

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5 Citations (Scopus)

Abstract

We measured the electrical resistivity of La1.85 Sr0.15 Cu1-y Zny O4 (y=0,0.004,0.008,0.017) single crystals to study the magnetic-field dependence of the superconducting transitions. For y=0∼0.008, as the magnetic field along the c axis is increased, the superconducting transition significantly broadens while the onset Tc remains unchanged in both the in-plane resistivity ρab and the out-of-plane resistivity ρc. This corresponds to the so-called broadening behavior. For y=0.017, the onset Tc is apparently reduced with increasing the magnetic field, which we define as a parallel shift. This indicates that the in-plane superconducting coherence length drastically increases at y=0.017. We discuss these Zn-doping effects based on an inhomogeneous picture.

Original languageEnglish
Article number184508
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume79
Issue number18
DOIs
Publication statusPublished - 2009 May 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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