Muon-spin-relaxation study on the Cu-spin state of Bi2Sr2Ca1-xYx(Cu1-y Zny)2O8+δ around the hole concentration of 1/8 per Cu

I. Watanabe, M. Akoshima, Y. Koike, S. Ohira, K. Nagamine

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Muon-spin-relaxation (μSR) measurements were applied to the partially Zn-substituted Bi-2212 system, Bi2Sr2Ca1-xYx(Cu1-y Zny)2O8+δ, to study the Cu-spin state in a wide range of the hole concentration, p. Singularity of the magnetic correlation between Cu spins at p∼1/8 per Cu has been confirmed clearly, proving the existence of the so-called "1/8 effect" in the Bi-2212 system. The muon-spin depolarization rate of the Zn-substituted sample with p∼1/8 per Cu (x=0.3125 and y=0.025) at 0.30 K has been found to exhibit nearly a root-square dependence on the magnetic field applied along the initial muon-spin direction. This field dependence can be explained by assuming that a magnetically excited state of Cu spins moves in a one-dimensional direction producing fluctuating internal fields at the muon sites. The present μSR measurements may support the existence of the stripe correlations of spins and holes in the Bi-2212 system also.

Original languageEnglish
Pages (from-to)14524-14530
Number of pages7
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number21
Publication statusPublished - 2000 Dec 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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