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Random Field Ising Model Criticality in a Complex Binary Liquid System.

Henrich Frielinghaus1, Purushottam S Dubey1, Debasish Saha1

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This summary is machine-generated.

Critical fluctuations in liquids with finite-size effects were studied using the random-field Ising model (RFIM). Experimental results for a binary liquid in a porous gel aligned with RFIM predictions, offering insights into frustrated critical phenomena.

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Area of Science:

  • Physics
  • Physical Chemistry

Background:

  • Ising criticality is well-established in classical liquids.
  • Critical phenomena in liquids with frustrated correlation length growth due to finite-size effects are less understood.
  • The random-field Ising model (RFIM) offers a theoretical framework for such systems.

Purpose of the Study:

  • To investigate critical fluctuations in a binary liquid system under finite-size constraints.
  • To compare experimental findings with theoretical predictions from the random-field Ising model (RFIM).

Main Methods:

  • Studied a binary liquid mixture of 3-methyl pyridine and heavy water.
  • Utilized a lightweight porous gel to induce finite-size effects.
  • Analyzed experimental critical fluctuations and compared them to RFIM predictions.

Main Results:

  • Experimental critical-exponent values (γ, ν, η) were investigated.
  • Observed agreement between experimental results and theoretical predictions from the RFIM.
  • Demonstrated the applicability of the RFIM to liquid systems with frustrated criticality.

Conclusions:

  • The random-field Ising model (RFIM) successfully describes critical phenomena in finite-size liquid systems.
  • Experimental data supports the theoretical framework of RFIM for frustrated Ising criticality.
  • Provides valuable experimental insights into liquid criticality under confinement.