5 papers
Microscopic description of the low-temperature anomalies in silica and lithium silicate via computer simulations
J. Reinisch, A. Heuer
Information about the nature of the low-temperature anomalies and in particular the properties of the tunneling systems in silica and lithium silica glasses are revealed via comput…
What is moving in silica at 1 K? A computer study of 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 many physical observables, knowledge about their properties is very rare.…
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…
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…
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…