Spins in the vortices of a high-temperature superconductor

B. Lake, G. Aeppli, K.N. Clausen, D.F. McMorrow, K. Lefmann, N.E. Hussey, N. Mangkorntong, M. Nohara, H. Takagi, T.E. Mason, A. Schröder

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Neutron scattering is used to characterize the magnetism of the vortices for the optimally doped high-temperature superconductor La2-xSrxCuO4 (x = 0.163) in an applied magnetic field. As temperature is reduced, Low-frequency spin fluctuations first disappear with the loss of vortex mobility, but then reappear. We find that the vortex state can be regarded as an inhomogeneous mixture of a superconducting spin fluid and a material containing a nearly ordered antiferromagnet. These experiments show that as for many other properties of cuprate superconductors, the important underlying microscopic forces are magnetic.
    Original languageEnglish
    JournalScience
    Volume291
    Issue number5509
    Pages (from-to)1759-1762
    ISSN0036-8075
    DOIs
    Publication statusPublished - 2001

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