Magnetic ordering in electronically phase-separated La2-xSrxCuO4+y: Neutron diffraction experiments

L. Udby, N. H. Andersen, F. C. Chou, N. B. Christensen, S. B. Emery, Kim Lefmann, J. W. Lynn, H. E. Mohottala, Ch. Niedermayer, B. O. Wells

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    8 Citations (SciVal)

    Abstract

    We present results of magnetic neutron diffraction experiments on the codoped superoxygenated La2-xSrxCuO4+y (LSCO+O) system with x=0.09. We find that the magnetic phase is long-range ordered incommensurate antiferromagnetic with a Neacuteel temperature T-N coinciding with the superconducting ordering temperature T-c=40 K. The incommensurability value is consistent with a hole doping of n(h)approximate to 1>8 but in contrast to nonsuperoxygenated La2-xSrxCuO4 with hole doping close to n(h)approximate to 18 the magnetic-order parameter is not field dependent. We attribute this to the magnetic order being fully developed in LSCO+O as in the spin and charge ordered "stripe" compounds La1.48Nd0.40Sr0.12CuO4 and La7/8Ba1/8CuO4.
    Original languageEnglish
    JournalPhysical Review B (Condensed Matter and Materials Physics)
    Volume80
    Issue number1
    DOIs
    Publication statusPublished - 2009

    Subject classification (UKÄ)

    • Natural Sciences
    • Physical Sciences

    Keywords

    • superconducting transition temperature
    • compounds
    • strontium
    • spin density waves
    • neutron diffraction
    • superconductors
    • magnetic
    • magnetic structure
    • long-range order
    • lanthanum compounds
    • high-temperature superconductors
    • antiferromagnetic materials
    • doping

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