Microscopic Aspects of Stretched Exponential Relaxation (SER)
Other Condensed Matter
2009-03-06 v1
Abstract
The Scher-Lax-Phillips (SLP) universal minimalist model quantitatively explains stretching fractions beta(Tg) for a wide variety of relaxation experiments (nearly 50 altogether) on electronic and molecular glasses and deeply supercooled liquids by assuming that quasi-particle excitations indexed by Breit-Wigner channels diffuse to traps (sinks). This model is effective here in discussing in detail three experiments: luminescence in isoelectronic Zn(Se,Te) alloys, fibrous relaxation in orthoterphenyl (OTP) and related glasses and melts up to 1.15Tg, and relaxation of binary chalcogen melts probed by spin-polarized neutrons (T as high as 1.5Tg). The model is also compared to several other recent theories.
Keywords
Cite
@article{arxiv.0903.1067,
title = {Microscopic Aspects of Stretched Exponential Relaxation (SER)},
author = {J. C. Phillips},
journal= {arXiv preprint arXiv:0903.1067},
year = {2009}
}