Kotecky R., Laanait L., Messager A., Miracle-Sole S. A spin-one lattice model of microemulsions at low temperatures (32K, TeX) ABSTRACT. The phase diagram of a three state microemulsion model at low temperatures is discussed. It is shown how, taking into account low energy excitations, the ground state phase diagram is modified and the degeneracy of a coexistence line bordering the region of lamellar phase is taken away.