Phase transitions of bilayer spin-1/2 Baxter-Wu model with repulsive interlayer interactions

Liu, Wei; Sun, Pengwei; Yan, Zhengxin; Wang, Yixian

doi:10.1016/j.physleta.2020.126763

Cited by 1 publication

(2 citation statements)

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“…We studied the model with repulsive interlayer couplings in the article [32], and found that the phase transitions are continuous at our calculated strength of the interlayer couplings. In addition, if the coupling is weak enough, the behaviors of the transitions are very similar with the standard BW model which shows the pseudo-first-order phase transition [24], however, if the coupling is strong enough, the discontinuity of the transitions vanishes.…”

Section: The Case Of J Ab =1mentioning

confidence: 96%

“…It would be interesting to study two layer BW models, which might present features not observed in the single-layer one. We studied a two-layer triangular lattice coupled with repulsive Ising couplings and found the corrections to the critical exponents caused by the interlayer interactions [32]. However, the first-order phase transition signals were not found in the systems.…”

Section: Introductionmentioning

confidence: 99%

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Phase transitions of two spin-1/2 Baxter–Wu layers coupled with Ising-type interactions

Liu

Yan

Wang

2021

Commun. Theor. Phys.

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Using a Monte Carlo simulation and the single histogram reweighting technique, we study the critical behaviors and phase transitions of the Baxter–Wu (BW) model on a two-layer triangular lattice with Ising-type interlayer couplings. Via the finite-size analysis, we obtain the transition temperatures and critical exponents at repulsive and attractive interlayer couplings. The data for the repulsive interlayer coupling suggest continuous transitions, and the critical behaviors are the same as those of the 2D BW model, belonging to the four-state Potts universality class. The reduced energy cumulants and the histograms reveal that attractive coupling leads to weak first-order phase transitions. The pseudocritical exponents with the existence of the interlayer couplings indicate that the first-order transition is very close to the critical point of the 2D standard BW model.

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Section: The Case Of J Ab =1mentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%