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.
, Coppersmith, S.
, Leheny, R.
, Nagel, S.
, Rosenbaum, T.
and Menon, N.
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)