Effect of Lead substitution on LaO0.5F0.5BiS2

Satoshi Otsuki, Satoshi Demura, Yuuto Sakai, Yuita Fujisawa, Hideaki Sakata

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

We examined Lead (Pb) Substitution effect on a single crystal of a layered superconductor LaO0.5F0.5BiS2. Pb concentration dependence of the lattice constant showed slight anomaly at about 8% and 9% substitution of Pb for Bi. These samples showed the enhancement of the superconducting transition temperature and the superconducting volume fraction. Furthermore, these samples showed the anomaly in the temperature dependence of the resistivity at about 150 K. These results were not observed in Pb substituted NdO0.7F0.3BiS2. Therefore, the enhancement of the superconducting properties by Pb substitution is related to the structural instability for the pale perturbation in LaO0.5F0.5BiS2.

Original languageEnglish
Pages (from-to)17-21
Number of pages5
JournalSolid State Communications
Volume270
DOIs
Publication statusPublished - Feb 2018
Externally publishedYes

Keywords

  • A: BiS-based superconductor
  • B: Flux growth
  • C: Layered structure
  • D: Superconducting properties
  • E: Electrical resistivity measurement
  • E: Magnetic susceptibility measurement

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