Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
69 (1991), S. 6176-6178
ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
The existence of the fourth-order critical point has been found in the spin-1 Ising antiferromagnet with a single-ion potential and an external magnetic field involved by using the mean-field approximation calculation. The Monte Carlo simulation gives more accurate results and shows that no such phase transition occurs in the square lattice system. To show definitely that the fourth-order phase transition appears in three-dimensional systems, the simple cubic system is investigated by using Monte Carlo simulations. It was found that the decomposition of the tricritical point into a critical end point and a double critical end point appears in the phase diagram within a small range of the single-ion potential parameter. The location of the fourth-order critical point can also be estimated.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.348797
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