Fragility and compressibility at the glass transition
| dc.creator | Buchenau, U. | |
| dc.creator | Wischnewski, A. | |
| dc.date | 2004-01-07 | |
| dc.date | 2004-07-06 | |
| dc.date.accessioned | 2026-07-07T06:29:58Z | |
| dc.date.available | 2026-07-07T06:29:58Z | |
| dc.description | Isothermal compressibilities and Brillouin sound velocities from the literature allow to separate the compressibility at the glass transition into a high-frequency vibrational and a low-frequency relaxational part. Their ratio shows the linear fragility relation discovered by x-ray Brillouin scattering [1], though the data bend away from the line at higher fragilities. Using the concept of constrained degrees of freedom, one can show that the vibrational part follows the fragility-independent Lindemann criterion; the fragility dependence seems to stem from the relaxational part. The physical meaning of this finding is discussed. [1] T. Scopigno, G. Ruocco, F. Sette and G. Monaco, Science 302, 849 (2003) | |
| dc.description | 4 pages, 2 figures, 2 tables, 33 references. Slightly changed after refereeing | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0401088 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0401088 | |
| dc.identifier | Phys. Rev. B 70, 092201 (2004) | |
| dc.identifier | doi:10.1103/PhysRevB.70.092201 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/98230 | |
| dc.subject | Disordered Systems and Neural Networks | |
| dc.title | Fragility and compressibility at the glass transition | |
| dc.type | text |