Spin- and charge-density-wave orders in La1.87Sr0.13Cu0.99Fe0.01O4

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Abstract

We have performed elastic neutron-scattering measurements on La1.87Sr0.13Cu0.99Fe0.01O4 to study the magnetic impurity effects on the stripe correlations in high-Tc cuprates. Both charge-density-wave (CDW) and spin-density-wave (SDW) orders are observed in the low-temperature-orthorhombic (LTO) phase for the first time. With decreasing the temperature, CDW order first appears at ∼ 60 K followed by the SDW order at lower temperature of ∼ 50 K. The incommensurability for the CDW order (ε{lunate}) was found to be 0.224 ± 0.002 r.l.u., which is approximately twice of that for SDW order (δ) of 0.115 ± 0.003 r.l.u. Both ordering sequence and relation of ε{lunate} ≈ 2 δ are the same for SDW and CDW orders observed in the low-temperature-tetragonal (LTT) phase of La1.60 - x Nd0.4 Srx CuO4 (LNSCO), suggesting that the similar stripe correlations exist in the cuprate oxides, irrespective of crystal structure.

Original languageEnglish
Pages (from-to)3167-3170
Number of pages4
JournalJournal of Physics and Chemistry of Solids
Volume69
Issue number12
DOIs
Publication statusPublished - 2008 Dec 1

Keywords

  • C. Neutron scattering

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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