Abstract
The triplet correlations in an AgI-type solid electrolyte have been studied by a two-dimensional molecular-dynamics model. We have found that the interstitial positions are less occupied than the quasi-lattice positions. For distances less than 10 Å the system is predominantly solid-state-like and for distances greater than 16 Å it is predominantly liquid-state-like. The deviations of the exact triplet correlation function from the superposition approximate on is partly large - much larger than those we normally observe in monatomic liquids. These deviations should be strongly reflected in the isothermal pressure derivative of the structure factor and should therefore also lead to large effects in measurements.
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