Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2000-10-27
Physics
Condensed Matter
Disordered Systems and Neural Networks
8 pages, 9 figures, to be submitted to J. Phys. Soc. Jpn
Scientific paper
10.1143/JPSJ.70.1099
Magnetizations are introduced to the Generalized Random Energy Model (GREM) and numerical simulations on ac susceptibility is made for direct comparison with experiments in glassy materials. Prominent dynamical natures of spin glasses, {\it i.e.}, {\em memory} effect and {\em reinitialization}, are reproduced well in the GREM. The existence of many layers causing continuous transitions is very important for the two natures. Results of experiments in other glassy materials such as polymers, supercooled glycerol and orientational glasses, which are contrast to those in spin glasses, are interpreted well by the Single-layer Random Energy Model.
Nemoto Koji
Sasaki Munetaka
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