Tagged-particle motion in quasi-confined colloidal hard-sphere liquids
Soft Condensed Matter
2021-09-14 v1
Abstract
We investigate the tagged-particle motion in a strongly interacting quasi-confined liquid using periodic boundary conditions along the confining direction. Within a mode-coupling theory of the glass transition (MCT) we calculate the self-nonergodicity parameters and the self-intermediate scattering function and compare them with event-driven molecular dynamics simulations. We observe non-monotonic behavior for the in-plane mean-square displacement and further correlation functions which refer to higher mode indices encoding information about the perpendicular motion. The in-plane velocity-autocorrelation function reveals persistent anti-correlations with a negative algebraic power-law decay at all packing fractions.
Keywords
Cite
@article{arxiv.2109.05497,
title = {Tagged-particle motion in quasi-confined colloidal hard-sphere liquids},
author = {Lukas Schrack and Charlotte F. Petersen and Michele Caraglio and Gerhard Jung and Thomas Franosch},
journal= {arXiv preprint arXiv:2109.05497},
year = {2021}
}