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arXiv · 2109.10543

Critical behavior of a 2D spin-pseudospin model in a strong exchange limit

D. N. Yasinskaya·V. A. Ulitko·A. A. Chikov·Yu. D. Panov
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Abstract

We study the 2D static spin-pseudospin model equivalent to the dilute frustrated antiferromagnetic Ising model with charge impurities. We present the results of classical Monte Carlo simulation on a square lattice with periodic boundary conditions in a strong exchange limit. In the framework of the finite-size scaling theory we obtained the static critical exponents for the specific heat $α$ and the correlation length $ν$ for a wide range of the local density-density interaction parameter $Δ$ and charge density $n$. It was shown that the system exhibits non-universal critical behavior depending on these parameters.

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D. N. Yasinskaya, V. A. Ulitko, A. A. Chikov, Yu. D. Panov. 2021-09-22. Critical behavior of a 2D spin-pseudospin model in a strong exchange limit. https://doi.org/10.12693/aphyspola.137.979

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