Possible phase separation in the underdoped La2-xSrxCuO4 studied by the magnetic susceptibility

Keisuke Omori, Tadashi Adachi, Yoichi Tanabe, Yoji Koike

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In order to investigate the inhomogeneity of the superconductivity, we have grown a large-sized single-crystal of La2-xSrxCuO4 (LSCO), in which the Sr concentration, x, continuously changes in the underdoped regime, and measured the magnetic susceptibility on field cooling for several pieces of single crystal with different x values by slicing the single crystal. It has been found that the Meissner volume fraction, regarded as corresponding to the superconducting (SC) volume fraction in a sample, increases with increasing x. This suggests that a phase separation into SC and normal-state regions takes place in the underdoped regime as well as in the overdoped regime of LSCO.

Original languageEnglish
Pages (from-to)1184-1185
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume460-462 II
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 2007 Sep 1

Keywords

  • Inhomogeneous superconductivity
  • LaSrCuO
  • Magnetic susceptibility
  • Phase separation

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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