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Low-temperature relaxation in spin glasses

Zeitschrift für Physik B Condensed Matter, ISSN: 0722-3277, Vol: 61, Issue: 3, Page: 263-266
1985
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Metrics Details

  • Citations
    16
    • Citation Indexes
      16
  • Captures
    1

Article Description

We analyze the mechanism governing the long-time, low-temperature relaxation of the thermoremanent magnetization (σ) in metallic spin glasses. Ideas of quantum tunneling and "screening" of the local magnetic moments are employed to explain the existence of a hierarchy of relaxation times. This results in a time decay which is described by an enhanced power law: {Mathematical expression} with y≧1. A crossover is predicted below which most parameters become temperature-independent. © 1985 Springer-Verlag.

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