Abstract:
The critical properties of the antiferromagnetic layered Ising model on a cubic lattice with regard to the nearest-neighbor and next-nearest-neighbor interactions are investigated by the Monte Carlo method using the replica algorithm. The investigations are carried out for the ratios of exchange nearest-neighbor and next-nearest-neighbor interactions r=J2/J1 in the range of 0 ⩽r⩽ 1.0. Using the finite-size scaling theory, the static critical indices of specific heat α, order parameter β, susceptibility γ, correlation radius ν, and Fisher index η are calculated. It is shown that the universality class of the critical behavior of this model is retained in the range of 0 ⩽r⩽ 0.4. It is established that the change in the next-nearest-neighbor interaction value in this model in the range of r> 0.8 leads to the same universality class as the three-dimensional fully frustrated Ising model on the cubic lattice.
Citation:
A. K. Murtazaev, M. K. Ramazanov, “Critical properties of the antiferromagnetic layered Ising model on a cubic lattice with competing interactions”, Fizika Tverdogo Tela, 59:9 (2017), 1797–1803; Phys. Solid State, 59:9 (2017), 1822–1828