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  • PACS. 75.50.Lk Spin glasses and other random magnets - 75.10.Nr Spin-glass and other random models - 75.40.Gb Dynamic properties (dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, etc.)  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 13 (2000), S. 99-105 
    ISSN: 1434-6036
    Keywords: PACS. 75.50.Lk Spin glasses and other random magnets - 75.10.Nr Spin-glass and other random models - 75.40.Gb Dynamic properties (dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, etc.)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: 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.
    Type of Medium: Electronic Resource
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