Supercooled Liquids under Shear: Computational Approach
Ryoichi Yamamoto, Kunimasa Miyazaki, and David R. Reichman
TL;DR
This study uses molecular dynamics simulations to investigate supercooled liquids under shear, revealing unexpectedly small anisotropy in density correlations even at high shear rates, aligning with mode-coupling theory predictions.
Contribution
It provides computational evidence showing minimal anisotropy in supercooled liquids under shear, supporting recent theoretical predictions.
Findings
Small anisotropy in density correlations under strong shear
Enhanced structural relaxation in sheared states
Agreement with mode-coupling theory predictions
Abstract
We have performed molecular dynamics simulations for a model two-dimensional soft-core mixture in a supercooled state. The mixture exhibits a slow structural relaxation in a quiescent state, however, the relaxation is much enhanced in sheared states. There observed surprisingly small anisotropy both in the coherent and incoherent density correlation functions even under extremely strong shear which is times faster than the structural relaxation rate. The present simulation results agree well with predictions of the recently developed mode-coupling theory in shear.
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