On the energy landscape at the glass transition
Abstract
A recent hypothesis claims that the glass transition itself, though it is a very pronounced relaxation peak, is no separate relaxation process at all, but is just the breakdown of the shear modulus due to the weak elastic dipole interaction between all the quasi-independent relaxation centers of the glass. Two derivations are considered, one of them in terms of a breakdown of the shear modulus and the second in terms of a divergence of the shear compliance. Mechanical relaxation data from the literature for vitreous silica, glycerol, polymethylmethacrylate and polystyrene are found to be consistent with the first hypothesis.
Cite
@article{arxiv.cond-mat/0407241,
title = {On the energy landscape at the glass transition},
author = {U. Buchenau},
journal= {arXiv preprint arXiv:cond-mat/0407241},
year = {2007}
}
Comments
9 pages, 2 figures, 20 references. Accepted in Journal of Low Temperature Physics in a volume dedicated to Sigi Hunklinger's 65th birthday 2004