Evidence for a genuine ferromagnetic to paramagnetic reentrant phase transition in a Potts spin-glass model

Many experimental and theoretical efforts have been devoted in the past 20 years to searching for a genuine thermodynamic reentrant phase transition from a ferromagnetic to either a paramagnetic or spin-glass phase in disordered ferromagnets. So far, no real system or theoretical model of a short-range spin-glass system has been shown convincingly to display such a reentrant transition. We present here results from Migdal-Kadanoff real-space …