Compressing nearly hard sphere fluids increases glass fragility Export

@article{citeulike:4293806, abstract = {We use molecular dynamics to investigate the glass transition occurring at large volume fraction, ph, and low temperature, T, in assemblies of soft repulsive particles. We find that equilibrium dynamics in the (ph, T)-plane obey a form of dynamic scaling in the proximity of a critical point at T=0 and ph=ph0, which should correspond to the ideal glass transition of hard spheres. This glass point, "point G\", is distinct from athermal jamming thresholds. A remarkable consequence of scaling behaviour is that the dynamics at fixed ph passes smoothly from that of a strong glass to that of a very fragile glass as ph increases beyond ph0. Correlations between fragility and various physical properties are explored.}, author = {Berthier, L. and Witten, T. A.}, citeulike-article-id = {4293806}, citeulike-linkout-0 = {http://dx.doi.org/10.1209/0295-5075/86/10001}, doi = {10.1209/0295-5075/86/10001}, journal = {EPL (Europhysics Letters)}, keywords = {glass, hardcore, simulation}, number = {1}, pages = {10001+}, posted-at = {2009-09-12 09:46:28}, priority = {2}, title = {Compressing nearly hard sphere fluids increases glass fragility}, url = {http://dx.doi.org/10.1209/0295-5075/86/10001}, volume = {86}, year = {2009} }

TY - JOUR ID - citeulike:4293806 L3 - citeulike-article-id:4293806 N2 - We use molecular dynamics to investigate the glass transition occurring at large volume fraction, ph, and low temperature, T, in assemblies of soft repulsive particles. We find that equilibrium dynamics in the (ph, T)-plane obey a form of dynamic scaling in the proximity of a critical point at T=0 and ph=ph0, which should correspond to the ideal glass transition of hard spheres. This glass point, "point G", is distinct from athermal jamming thresholds. A remarkable consequence of scaling behaviour is that the dynamics at fixed ph passes smoothly from that of a strong glass to that of a very fragile glass as ph increases beyond ph0. Correlations between fragility and various physical properties are explored. IS - 1 JF - EPL (Europhysics Letters) TI - Compressing nearly hard sphere fluids increases glass fragility VL - 86 SP - 10001 KW - glass KW - hardcore KW - simulation AU - Berthier, L AU - Witten, TA PY - 2009/// UR - http://dx.doi.org/10.1209/0295-5075/86/10001 ER -