CAM Analysis of Dimensionality Crossover

Layered square-lattice ferromagnetic Ising models (∞ × ∞ × n lattices) are studied by the Monte Carlo simulation for n = 3 to 7. The results show the dimensionality crossover from the two-dimensional square lattice Ising model to the three-dimensional simple cubic Ising model. Furthermore, the CAM analysis is performed to evaluate the critical exponent γ of the three-dimensional simple cubic ferromagnetic Ising model, which shows that γ = 1.21(4). The present analysis is also applicable to the study of the phase transition of quantum spin systems.