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 Citeringar (SciVal)

    Sammanfattning

    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.
    Originalspråkengelska
    TidskriftPhysical Review B (Condensed Matter and Materials Physics)
    Volym80
    Utgåva1
    DOI
    StatusPublished - 2009

    Ämnesklassifikation (UKÄ)

    • Naturvetenskap
    • Fysik

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