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Evidence for Glass and Spin-Glass Phase Transitions From the Dynamic Susceptibility



D Bitko, S N. Coppersmith, R L. Leheny, S R. Nagel, T F. Rosenbaum, N Menon


We present evidence that there is a phase transition, with a diverging static susceptibility, underlying the transformation of a liquid into a glass. The dielectric susceptibility, at frequencies above its characteristic value, shows a power-law tail extending over many decades to higher frequencies. An extrapolation of this behavior to the temperature where the dynamics becomes arrested indicates a diverging susceptibility. We present evidence for analogous behavior in the magnetic susceptibility of a para-magnet approaching the spin-glass transition. The similarity of the response in these two glassy systems suggests that some conventional lore, such as that the spin glass shows evidence for a diverging correlation length only in a nonlinear but not in the linear susceptibility, may be invalid.
Journal of Research (NIST JRES) -
102 No. 2


dielectric susceptibility, glass transition, magnetic susceptibility, nonlinear susceptibility, specific-heat spectroscopy, spin-glass transition


Bitko, D. , Coppersmith, S. , Leheny, R. , Nagel, S. , Rosenbaum, T. and Menon, N. (1997), Evidence for Glass and Spin-Glass Phase Transitions From the Dynamic Susceptibility, Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD (Accessed February 28, 2024)
Created March 1, 1997, Updated February 17, 2017