Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2002-11-14
Physics
Condensed Matter
Soft Condensed Matter
5 pages, 4 figures. Significant revisions made to text
Scientific paper
10.1209/epl/i2003-00347-0
The dielectric susceptibility of the molecular liquid sorbitol below its calorimetric glass transition displays memory strikingly similar to that of a variety of glassy materials. During a temporary stop in cooling, the susceptibility changes with time, and upon reheating the susceptibility retraces these changes. To investigate the out-of-equilibrium state of the liquid as it displays this memory, the heating stage of this cycle is interrupted and the subsequent aging characterized. At temperatures above that of the original cooling stop, the liquid enters a state on heating with an effective age that is proportional to the duration of the stop, while at lower temperatures no effective age can be assigned and subtler behavior emerges. These results, which reveal differences with memory displayed by spin glasses, are discussed in the context of the liquid's energy landscape.
Leheny Robert L.
Yardimci H.
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