Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2000-04-28
J. Phys. A: Math. and Gen. 33, 1987-1992 (2000)
Physics
Condensed Matter
Statistical Mechanics
9 pages, 2 ps figures included
Scientific paper
10.1088/0305-4470/33/10/303
The effects of competing quadrupolar- and spin-glass orderings are investigated on a spin-1 Ising model with infinite-range random $p$-spin interactions. The model is studied through the replica approach and a phase diagram is obtained in the limit $p\to\infty$. The phase diagram, obtained within replica-symmetry breaking, exhibits a very unusual feature in magnetic models: three first-order transition lines meeting at a commom triple point, where all phases of the model coexist.
da Costa Francisco Alexandre
de Araujo J. M.
Nobre Fernando D.
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