Effects of magnetic order on the superconducting length scales and critical fields in single crystal ErNi2B2C

P.L. Gammel, B.P. Barber, A.P. Ramirez, C.M. Varma, D.J. Bishop, P.C. Canfield, V.G. Kogan, M.R. Eskildsen, N.H. Andersen, K. Mortensen, K. Harada

    Research output: Contribution to journalJournal articleResearch

    Abstract

    The flux line form factor in small angle neutron scattering and transport data determines the superconducting length scares and critical fields in single crystal ErNi2B2C. For H parallel to c, the coherence length xi increases and the penetration depth lambda decreases when crossing T-N = 6.0 K, the Neel transition. The critical fields show corresponding anomalies near T-N. For H perpendicular to c, the fourfold modulation of the upper critical field H-c2 is strongly temperature dependent, changing sign near T-N, and can be modeled using the anisotropy of the sublattice magnetization.
    Original languageEnglish
    JournalPhysical Review Letters
    Volume82
    Issue number8
    Pages (from-to)1756-1759
    ISSN0031-9007
    DOIs
    Publication statusPublished - 1999

    Fingerprint Dive into the research topics of 'Effects of magnetic order on the superconducting length scales and critical fields in single crystal ErNi<sub>2</sub>B<sub>2</sub>C'. Together they form a unique fingerprint.

    Cite this