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Related Experiment Video

Updated: Jul 26, 2026

Site Directed Spin Labeling and EPR Spectroscopic Studies of Pentameric Ligand-Gated Ion Channels
11:19

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Published on: July 4, 2016

Ordering in Heisenberg spin glasses.

Dorothée Petit1, L Fruchter, I A Campbell

  • 1Laboratoire de Physique des Solides, Université Paris Sud, 91405 Orsay, France.

Physical Review Letters
|May 15, 2002
PubMed
Summary

Torque experiments on Heisenberg spin glasses reveal a robust ordered state persisting in high magnetic fields. This finding supports chiral ordering models with replica symmetry breaking.

Area of Science:

  • Condensed Matter Physics
  • Magnetism
  • Statistical Mechanics

Background:

  • Spin glasses are complex magnetic systems exhibiting quenched disorder.
  • Understanding their low-temperature ordered phases, especially under external fields, is crucial.
  • Previous models have proposed chiral ordering and replica symmetry breaking.

Purpose of the Study:

  • To investigate the behavior of Heisenberg spin glasses in high applied magnetic fields.
  • To measure key parameters like Dzyaloshinski-Moriya anisotropy and torque relaxation.
  • To test the validity of chiral ordering models in strong magnetic fields.

Main Methods:

  • Performing torque magnetometry experiments on five distinct Heisenberg spin glass systems.
  • Applying magnetic fields up to 4 Tesla.

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Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

  • Measuring Dzyaloshinski-Moriya random anisotropy strengths, in-field torque onset temperatures, and torque relaxation.
  • Estimating critical exponents using a standard protocol.

    • Main Results:

    • Experimental data provide strong evidence for a true spin glass ordered state.
    • This ordered state is shown to survive under high applied magnetic fields.
    • Measured parameters are consistent with predictions from chiral ordering models.

    Conclusions:

    • The study confirms the existence of a stable spin glass ordered phase in strong magnetic fields.
    • Results are consistently interpreted by a chiral ordering model incorporating replica symmetry breaking.
    • The findings support theoretical frameworks for understanding complex magnetic phenomena.