Alpha-relaxation processes in binary hard-sphere mixtures

@article{foffi04, abstract = {Molecular-dynamics simulations are presented for two correlation functions formed with the partial density fluctuations of binary hard-sphere mixtures in order to explore the effects of mixing on the evolution of glassy dynamics upon compressing the liquid into high-density states. Partial-density-fluctuation correlation functions for the two species are reported. Results for the -relaxation process are quantified by parameters for the strength, stretching, and time scale, where the latter varies over almost four orders of magnitude upon compression. The parameters exhibit an appreciable dependence on the wave vector, and this dependence is different for the correlation function referring to the smaller and that for the larger species. These features are shown to be in semiquantitative agreement with those calculated within the mode-coupling theory for ideal liquid-glass transitions.}, author = {Foffi, G. and G{\"o}tze, W. and Sciortino, F. and Tartaglia, P. and Voigtmann, T. }, citeulike-article-id = {1702300}, doi = {10.1103/PhysRevE.69.011505}, journal = {Physical Review E}, keywords = {binary, glass, hard-sphere, simulation}, number = {1}, pages = {011505}, posted-at = {2007-09-27 17:55:11}, priority = {2}, publisher = {APS}, title = {Alpha-relaxation processes in binary hard-sphere mixtures}, url = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal\&id=PLEEE8000069000001011505000001\&idtype=cvips\&gifs=yes}, volume = {69}, year = {2004} }

TY - JOUR ID - foffi04 L3 - citeulike-article-id:1702300 TI - Alpha-relaxation processes in binary hard-sphere mixtures JF - Physical Review E VL - 69 IS - 1 SP - 011505 EP - 011505 PB - APS N2 - Molecular-dynamics simulations are presented for two correlation functions formed with the partial density fluctuations of binary hard-sphere mixtures in order to explore the effects of mixing on the evolution of glassy dynamics upon compressing the liquid into high-density states. Partial-density-fluctuation correlation functions for the two species are reported. Results for the -relaxation process are quantified by parameters for the strength, stretching, and time scale, where the latter varies over almost four orders of magnitude upon compression. The parameters exhibit an appreciable dependence on the wave vector, and this dependence is different for the correlation function referring to the smaller and that for the larger species. These features are shown to be in semiquantitative agreement with those calculated within the mode-coupling theory for ideal liquid-glass transitions. KW - binary KW - glass KW - hard-sphere KW - simulation AU - Foffi, G AU - G{\"o}tze, W AU - Sciortino, F AU - Tartaglia, P AU - Voigtmann, T PY - 2004/// UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PLEEE8000069000001011505000001&idtype=cvips&gifs=yes ER -