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Rizzo, T. and Voigtmann, Th. (2015) Qualitative features at the glass crossover. Europhysics Letters, 111, p. 56008. EPLA. doi: 10.1209/0295-5075/111/56008. ISSN 0295-5075.
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Abstract
We discuss generic features of the dynamics of glass-forming liquids close to the glass transition singularity of the idealized mode-coupling theory (MCT). The analysis is based on a recent theory by one of the authors for the intermediate-time dynamics ($\beta$ relaxation), derived by applying dynamical field-theory techniques to the idealized MCT. Taking the long-time asymptote of the $\beta$-relaxation regime as a proxy for universal aspects of the slow structural ($\alpha$) relaxation, we explain three prominent features of the dynamical crossover: the change from a power-law to exponential increase in the structural relaxation time, the replacement of the Stokes-Einstein relation between diffusion and viscosity by a fractional law, and two distinct growth regimes of the thermal susceptibility that has been associated to dynamical heterogeneities.
| Item URL in elib: | https://elib.dlr.de/99742/ | |||||||||
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| Document Type: | Article | |||||||||
| Title: | Qualitative features at the glass crossover | |||||||||
| Authors: |
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| Date: | 2015 | |||||||||
| Journal or Publication Title: | Europhysics Letters | |||||||||
| Refereed publication: | Yes | |||||||||
| Open Access: | No | |||||||||
| Gold Open Access: | No | |||||||||
| In SCOPUS: | Yes | |||||||||
| In ISI Web of Science: | Yes | |||||||||
| Volume: | 111 | |||||||||
| DOI: | 10.1209/0295-5075/111/56008 | |||||||||
| Page Range: | p. 56008 | |||||||||
| Publisher: | EPLA | |||||||||
| ISSN: | 0295-5075 | |||||||||
| Status: | Published | |||||||||
| Keywords: | mode coupling theory, glass transition, replica theory | |||||||||
| HGF - Research field: | Aeronautics, Space and Transport | |||||||||
| HGF - Program: | Space | |||||||||
| HGF - Program Themes: | Research under Space Conditions | |||||||||
| DLR - Research area: | Raumfahrt | |||||||||
| DLR - Program: | R FR - Research under Space Conditions | |||||||||
| DLR - Research theme (Project): | R - Vorhaben Materialwissenschaftliche Forschung (old) | |||||||||
| Location: | Köln-Porz | |||||||||
| Institutes and Institutions: | Institute of Materials Physics in Space | |||||||||
| Deposited By: | Voigtmann, Dr.rer.nat. Thomas | |||||||||
| Deposited On: | 24 Nov 2015 09:24 | |||||||||
| Last Modified: | 10 Jan 2019 15:47 |
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