Anomalous broadening of the spin-flop transition in the reentrant spin-glass phase of La2-xSrxCuO4 (x = 0.018)

T. Suzuki, T. Goto, K. Chiba, T. Fukase, M. Fujita, K. Yamada

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Abstract

The magnetization in a lightly doped La2-xSrxCuO4 (x = 0.018) single crystal was measured. Spin-flop transition was clearly observed in the hole-doped antiferromagnetically ordered state under increasing magnetic fields perpendicular to the CuO2 plane. In the spin-glass phase below 25 K, the spin-flop transition becomes broad but the step in the magnetization curve associated with the transition remains finite at the lowest temperature. We show in this report that, at low temperature, the homogeneous antiferromagnetic order is disturbed by the redistribution of holes, and that the spatial variance of the local hole concentration around x = 0.018 increases.

Original languageEnglish
Article number172410
Pages (from-to)1724101-1724104
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume66
Issue number17
Publication statusPublished - 2002 Nov 1

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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