Browsing Geldart, Wally by Subject "Spin systems"

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  • Critical exponents and amplitude ratios from electrical resistivity measurements of dysprosium 

    Malmstrom, G., and D. J. W. Geldart. 1980. "Critical exponents and amplitude ratios from electrical resistivity measurements of dysprosium." Physical Review B (Condensed Matter) 21(3): 1133-8. Copyright © 1980 American Physical Society.
    Resistive anomalies in helical antiferromagnets are shown to reflect the temperature dependence of the specific heat sufficiently close to the Neel temperature. The temperature dependence of superzone energy gaps does not ...

  • Resistive anomalies at the critical point of isotropic ferromagnets 

    Richard, T. G., and D. J. W. Geldart. 1973. "Resistive anomalies at the critical point of isotropic ferromagnets." Physical Review Letters 30(7): 290-4. Copyright © 1973 American Physical Society.
    The effect of spin fluctuations on electrical resistivity (T) is studied in a single-band model. It is shown that d(T)/dT varies as the magnetic specific heat for TTc as well as TTc and that both short-range and long-range ...