TY  - JOUR
AB  - We investigate numerically the three-dimensional three-state Potts models with nearest-neighbor (NN) ferromagnetic coupling and next-nearest-neighbor (NNN) antiferromagnetic coupling of relative strength-gamma on L3 lattices with L = 12, 16, 20, 32, and 40. For all the gamma-values that we studied, 0.0 less-than-or-equal-to gamma less-than-or-equal-to 0.8, we find indications of a first-order phase transition between the ordered and disordered phases. In the neighborhood of gamma = 0.25, the latent heat becomes rather small, making it necessary to use still larger lattices to rule out a higher-order phase transition at gamma = 0.25. We also studied the boundary regimes of the three different ordered phases and find no criticality along them, thus suggesting a lack of criticality in these extended Potts models.
DA  - 1992
DO  - 10.1103/PhysRevB.46.944
LA  - eng
IS  - 2
M2  - 944
PY  - 1992
SN  - 0163-1829
SP  - 944-954
T2  - Physical Review, B
TI  - Z(3) criticality in three dimensions: study of extended Potts models
UR  - https://nbn-resolving.org/urn:nbn:de:0070-pub-17845829
Y2  - 2024-12-04T08:18:35
ER  -