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Reentrant glass transitions in confined hard-sphere glasses

Suvendu Mandal, Ruhr-Universität Bochum, Bochum,

Dierk Raabe, Max-Planck-Institut für Eisenforschung GmbH, Düsseldorf, Germany

Fathollah Varnik, Ruhr-Universität Bochum, Bochum, Germany

Time & Place
  • Date: 19.03.2012
  • Time:
  • Place: The international discussion meeting: Statistical Mechanics: Interplay of Theory and Computer Simulations, Johannes Gutenberg-Universität, Mainz, Germany

Abstract

We perform  molecular dynamics  simulations for a slightly polydisperse, densely packed  hard-sphere fluid confined between two parallel walls [1]. The  diffusion coefficient  parallel to the walls is observed to  vary by orders of magnitudes upon changing the wall separation while keeping the packing fraction fixed. A striking multiple reentrance scenario emerges for the transition from liquid to glass as the wall separation becomes comparable to the particle diameter. The non-monotonic behavior of  the  phase diagram is rationalized in terms of  a  numerical solution of a recently developed mode-coupling theory [1,2].


References:
[1] S. Mandal, S. Lang, R. Schilling, M. Oettel, D. Raabe, T. Franosch, F. Varnik,  under review.
[2] S. Lang, V. Botan, M. Oettel, D. Hajnal, T. Franosch, R. Schilling, Phys. Rev. Lett. 105, 125701 (2010).

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