Nonequilibrium dynamics in amorphous Si3B3N7.
作者： A. Hannemann , J. C. Schön , M. Jansen , P. Sibani
DOI: 10.1021/JP050586H
关键词:
摘要: We present extensive numerical investigations of the structural relaxation dynamics a realistic model amorphous high-temperature ceramic a-Si3B3N7, probing mean-square displacement atoms, bond survival probability, average energy, specific heat, and two-point energy average. Combining information from these different sources, we identify transition temperature Tc approximately 2000 K below which system is no longer ergodic physical quantities observed over time t(obs) show systematic parametric dependence on waiting t(w), or age, elapsed after quench. The aging "stiffens" as becomes older, similar to behavior highly idealized models such Ising spin glasses Lennard-Jones glasses.
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