2000/01/31 by Ulrich Schneider, U. Schneider, R. Brand +2 · 4 citations
Materials Science · Physics and Astronomy · #Glass properties and applications #Material Dynamics and Properties #cond-mat.dis-nn #cond-mat.soft
paper · pdf · doi:10.1103/physrevlett.84.5560
published as Phys. Rev. Lett. 84, 5560 (2000) · submitted to Phys. Rev. Lett., 4 figures, revised version after referee reports
arxiv created 2000/03/02 · openalex publication_date 2000/06/12 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Dielectric loss spectra of glass-forming propylene carbonate and glycerol at temperatures above and below T(g) are presented. By performing aging experiments lasting up to five weeks, equilibrium spectra below T(g) have been obtained. During aging, the excess wing, showing up as a second power law at high frequencies, develops into a shoulder. The results strongly suggest that the excess wing, observed in a variety of glass formers, is the high-frequency flank of a beta relaxation.