Muon-spin-relaxation study of the effect of nonmagnetic impurities on the Cu-spin fluctuations in La2-xSrxCu1-yZnyO4 around x = 0.115

I. Watanabe, T. Adachi, K. Takahashi, S. Yairi, Yoji Koike, K. Nagamine

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Abstract

Zero-field muon-spin-relaxation (μSR) measurements have been carried out in order to investigate the effect of nonmagnetic impurities on the dynamics of the Cu-spin fluctuations in the Zn-substituted La2-xSrxCu1-yZnyO4 with x=0.115 and 0.13, changing y from 0 to 0.10. A long-range-ordered state of Cu spins, which is observed in the Zn-free sample with x=0.115, disappears in the Zn-free sample with x = 0.13, but appears again in the Zn-substituted samples with x = 0.13 for y ≥ 0.0075. The long-range-ordered state disappears for y > 0.03 for both values of x, so that the Cu spins are in a paramagnetic state. The present μSR results support the suggestion that a small amount of nonmagnetic impurities produces a pinning of the dynamical stripe correlations of spins and holes and make them statically stabilized, while a large amount of nonmagnetic impurities destroy the stripe correlations themselves.

Original languageEnglish
Article number180516
Pages (from-to)1805161-1805164
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume65
Issue number18
Publication statusPublished - 2002 May 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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