Glassy Aging Dynamics
Disordered Systems and Neural Networks
2007-05-23 v1 Soft Condensed Matter
Abstract
We present time-dependent dielectric loss data at different frequencies for a variety of glass formers after cooling below the glass temperature. The observed aging dynamics is described using a modified Kohlrausch-Williams-Watts law, which takes into account the time-dependent variation of the relaxation time during aging. It leads to values for the aging relaxation time and stretching exponent that are fully consistent with the results from equilibrium measurements performed at higher temperatures. Irrespective of the dynamic process prevailing in the investigated frequency region, the aging dynamics is always determined by the structural relaxation process.
Cite
@article{arxiv.cond-mat/0503449,
title = {Glassy Aging Dynamics},
author = {P. Lunkenheimer and R. Wehn and U. Schneider and A. Loidl},
journal= {arXiv preprint arXiv:cond-mat/0503449},
year = {2007}
}
Comments
4 pages, 4 figures