Superconducting volume fraction in overdoped regime of La 2-xSrxCuO4: Implication for phase separation from magnetic-susceptibility measurement

Yoichi Tanabe, Tadashi Adachi, Takashi Noji, Yoji Koike

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)

Abstract

We have grown a single crystal of La2-xSrxCuO 4 in which the Sr concentration, x, continuously changes from 0.24 to 0.29 in the overdoped regime and obtained many pieces of single crystals with different x values by slicing the single crystal. From detailed measurements of the magnetic susceptibility, χ, of each piece, it has been found that the absolute value of χ at the measured lowest temperature 2K, |χ2K|, on field cooling rapidly decreases with increasing x as well as the superconducting (SC) transition temperature. As the value of |χ2K| is regarded as corresponding to the SC volume fraction in a sample, it has been concluded that a phase separation into SC and normalstate regions occurs in a sample of La 2-xSrxCuO4 in the overdoped regime.

Original languageEnglish
Pages (from-to)2893-2896
Number of pages4
Journaljournal of the physical society of japan
Volume74
Issue number11
DOIs
Publication statusPublished - 2005 Nov

Keywords

  • LaSrCuO
  • Magnetic susceptibility
  • Phase separation
  • Sr-concentration-gradient single crystal
  • Superconducting volume fraction

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Superconducting volume fraction in overdoped regime of La <sub>2-x</sub>Sr<sub>x</sub>CuO<sub>4</sub>: Implication for phase separation from magnetic-susceptibility measurement'. Together they form a unique fingerprint.

Cite this