Abstract:
When a spin glass is cooled down, a memory of the cooling process is imprinted in the spin structure. This memory can be disclosed in a continuous heating measurement of the ac-susceptibility. E.g., if a continuous cooling process is intermittently halted during a certain aging time at one or two intermediate temperatures, the trace of the previous stop(s) is recovered when the sample is continuously re-heated [#!uppsalaSaclay!#]. However, heating the sample above the aging temperature, but keeping it below , erases the memory of the thermal history at lower temperatures. We also show that a memory imprinted at a higher temperature can be erased by waiting a long enough time at a lower temperature. Predictions from two complementary spin glass descriptions, a hierarchical phase space model and a real space droplet picture are contested with these memory phenomena and interference effects.
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Received 28 April 1999
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Jonason, K., Nordblad, P., Vincent, E. et al. Memory interference effects in spin glasses. Eur. Phys. J. B 13, 99–105 (2000). https://doi.org/10.1007/s100510050014
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DOI: https://doi.org/10.1007/s100510050014