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Phase diagram of the antiferromagnetic 3-state Potts model on a bcc lattice with competing interactions

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Listed:
  • Kurbanova, D.R.
  • Magomedov, M.A.
  • Dzhamaludinov, M.R.
  • Ramazanov, M.K.
  • Murtazaev, A.K.

Abstract

The antiferromagnetic 3-state Potts model on a body-centered cubic lattice with competing interactions of the first (J1) and second (J2) nearest-neighbor was studied by the Monte Carlo method. A phase diagram was plotted. The competition of exchange interactions in the range −2/3 < J2 < 0 was determined to result in a phase separation. In the low-temperature region, an ordered phase, lying inside the phase with broken sublattice symmetry, was found. The second nearest-neighbor interactions leads to a change in the phase transition order. In addition, at J2 ≤ −2/3, a phase with broken sublattice symmetry state of a different type arises. Such features are not observed at the ferro-antiferromagnetic interaction. The critical exponents for the second-order phase transition are estimated using scaling relations.

Suggested Citation

  • Kurbanova, D.R. & Magomedov, M.A. & Dzhamaludinov, M.R. & Ramazanov, M.K. & Murtazaev, A.K., 2025. "Phase diagram of the antiferromagnetic 3-state Potts model on a bcc lattice with competing interactions," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 676(C).
    • Handle: RePEc:eee:phsmap:v:676:y:2025:i:c:s0378437125005229
    DOI: 10.1016/j.physa.2025.130870
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