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  • Udby, L., et al. (author)
  • Magnetic ordering in electronically phase-separated La2-xSrxCuO4+y: Neutron diffraction experiments
  • 2009
  • In: Physical Review B (Condensed Matter and Materials Physics). - 1098-0121. ; 80:1
  • Journal article (peer-reviewed)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.
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