Berlin 2015 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 47: P12: Glasses and Glass Transition
CPP 47.1: Poster
Mittwoch, 18. März 2015, 10:00–13:00, Poster A
The effect of finite temperatures on jammed packings — •Clemens Buss1, Claus Heussinger2, and Oskar Hallatschek3 — 1Max-Planck-Institut für Dynamik und Selbstorganisation (MPIDS) Bunsenstrasse 10, D-37073 Göttingen — 2Institute for theoretical Physics University of Goettingen Friedrich Hund Platz 1 37077 Goettingen — 3Department of Physics University of California 366 LeConte Hall MC 7300 Berkeley, CA, 94720-7300
We study the effect of finite temperatures on jammed packings. The packings are obtained through a standard energy minimization protocol. We then study their thermodynamic properties by simulating them at finite temperature through a Monte Carlo Metropolis scheme. Based on our simulation model, we can determine mechanical and thermodynamical properties and how they behave for different temperatures, external pressure and coordination numbers. The quantities we measure comprise the thermal expansion, bulk and shear modulus as well as the phase diagram. Together with theoretical arguments we can explain crucial parts of the results and the scaling behaviour. In the last step we connect those findings to real materials such as silica glass.