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cond-mat.mtrl-sci2004
The Origin of the Fragile-to-Strong Crossover in Liquid Silica as Expressed by its Potential Energy Landscape
A. Saksaengwijit, J. Reinisch, A. Heuer
The origin of the fragile-to-strong crossover in liquid silica is characterized in terms of properties of the potential energy landscape (PEL). Using the standard BKS model of sili…
cond-mat.mtrl-sci2004
How Cooperative are the Dynamics in Tunneling Systems? A Computer Study for an Atomic Model Glass
J. Reinisch, A. Heuer
Via computer simulations of the standard binary Lennard-Jones glass former we have obtained in a systematic way a large set of close-by pairs of minima on the potential energy land…
cond-mat.mtrl-sci2004
Local Properties of the Potential Energy Landscape of a Model Glass: Understanding the Low Temperature Anomalies
J. Reinisch, A. Heuer
Though the existence of two-level systems (TLS) is widely accepted to explain low temperature anomalies in the sound absorption, heat capacity, thermal conductivity and other quant…