02306nas a2200181   4500008004100000022001400041245013100055210006900186260000800255300001100263490000800274520162500282100002001907700001701927700001801944700003401962856012801996       2024                        eng d  a0021-960600aExploring the soft pinning effect in the dynamics and the structure-dynamics correlation in multicomponent supercooled liquids0 aExploring the soft pinning effect in the dynamics and the struct  cOCT  a1545010 v1613 a<p>
	We study multicomponent liquids by increasing the mass of 15% of the particles in a binary Kob-Andersen model. We find that the heavy particles have dual effects on the lighter particles. At higher temperatures, there is a significant decoupling of the dynamics between heavier and lighter particles, with the former resembling a pinned particle to the latter. The dynamics of the lighter particles slow down due to the excluded volume around the nearly immobile heavier particles. Conversely, at lower temperatures, there is a coupling between the dynamics of the heavier and lighter particles. The heavier particles' mass slows down the dynamics of both types of particles. This makes the soft pinning effect of the heavy particles questionable in this regime. We demonstrate that as the mass of the heavy particles increases, the coupling of the dynamics between the lighter and heavier particles weakens. Consequently, the heavier the mass of the heavy particles, the more effectively they act as soft pinning centers in both high and low-temperature regimes. A key finding is that akin to the pinned system, the self-dynamics and collective dynamics of the lighter particles decouple from each other as the mass of the heavy particles has a more pronounced impact on the latter. We analyze the structure-dynamics correlation by considering the system under the binary and modified quaternary framework, the latter describing the pinned system. Our findings indicate that whenever the heavy mass particles function as soft pinning centers, the modified quaternary framework predicts a higher correlation.</p>
1 aAnwar, Ehtesham1 aPatel, Palak1 aSharma, Mohit1 aBhattacharyya, Sarika, Maitra  uhttps://library.ncl.res.in/content/exploring-soft-pinning-effect-dynamics-and-structure-dynamics-correlation-multicomponent