Cooperative mercury motion in the ionic conductor Cu2HgI4
Damjan Pelc, Igor Markovic, Miroslav Pozek
TL;DR
This paper reports the discovery of glass-like cooperative mercury ion dynamics in Cu2HgI4, observed through NMR and conductivity experiments, revealing unexpected collective behavior in ionic conductors.
Contribution
It introduces the observation of glass-like ionic cooperativity in Cu2HgI4 and proposes a simple kinetic model to describe this phenomenon.
Findings
Glass-like dynamic correlations of mercury ions detected
Cooperative ionic behavior observed in non-glassy materials
A kinetic model successfully describes the ionic dynamics
Abstract
We present the observation of glass-like dynamic correlations of mobile mercury ions in the ionic conductor Cu2HgI4, detected in both NMR and nonlinear conductivity experiments. The results show that dynamic cooperativity appears in systems seemingly unrelated to glassy and soft arrested materials. A simple kinetic two-component model is proposed, which seems to provide a good description of the cooperative ionic dynamics.
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