Hall magnetometry measurements of bulk single crystalline rings of YBa2Cu3O7

M. Charalambous, R. Koch, A. D. Kent, W. T. Masselink

    Research output: Contribution to journalArticle

    Abstract

    The I-V characteristics of YBa2Cu3O7 rings are measured down to the subpicovolt level using a Hall magnetometry technique. Non-Ohmic response of the rings to an ac magnetic field is detected below a tem-perature TG. Fourier analysis of the data demonstrates appearance of higher harmonics up to order 9. The frequency and amplitude dependence of the harmonic susceptibilities is analyzed. The quasistatic I-V response of the ring is obtained after using a triangular wave form, providing conclusive evidence for the vortex-glass phase transition in twinned crystals. Different techniques are employed to improve the resolution of the method, including use of different semiconducting materials and use of a bridge circuit. The resolution achieved is 0.006 G/√Hz in a field of 1 T, corresponding to a relative resolution of 1 × 10-6 and a magnetic moment of 5 × 10-13 emu.

    Original languageEnglish (US)
    Pages (from-to)9510-9523
    Number of pages14
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume58
    Issue number14
    StatePublished - Oct 1 1998

    Fingerprint

    Bridge circuits
    Fourier analysis
    Magnetic moments
    magnetic measurement
    Vortex flow
    Phase transitions
    Magnetic fields
    Crystalline materials
    Glass
    Crystals
    rings
    harmonics
    magnetic moments
    vortices
    magnetic permeability
    glass
    magnetic fields
    crystals
    Magnetometry
    barium copper yttrium oxide

    ASJC Scopus subject areas

    • Condensed Matter Physics

    Cite this

    Charalambous, M., Koch, R., Kent, A. D., & Masselink, W. T. (1998). Hall magnetometry measurements of bulk single crystalline rings of YBa2Cu3O7 . Physical Review B - Condensed Matter and Materials Physics, 58(14), 9510-9523.

    Hall magnetometry measurements of bulk single crystalline rings of YBa2Cu3O7 . / Charalambous, M.; Koch, R.; Kent, A. D.; Masselink, W. T.

    In: Physical Review B - Condensed Matter and Materials Physics, Vol. 58, No. 14, 01.10.1998, p. 9510-9523.

    Research output: Contribution to journalArticle

    Charalambous, M, Koch, R, Kent, AD & Masselink, WT 1998, 'Hall magnetometry measurements of bulk single crystalline rings of YBa2Cu3O7 ', Physical Review B - Condensed Matter and Materials Physics, vol. 58, no. 14, pp. 9510-9523.
    Charalambous, M. ; Koch, R. ; Kent, A. D. ; Masselink, W. T. / Hall magnetometry measurements of bulk single crystalline rings of YBa2Cu3O7 . In: Physical Review B - Condensed Matter and Materials Physics. 1998 ; Vol. 58, No. 14. pp. 9510-9523.
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