Reentrant Mixed Phase Transition in a Metallic Spin-Glass Alloy

抄録

We study a dilute system of the classical Heisenberg spins coupled via the Ruderman-Kittel-Kasuya-Yoshida (RKKY) interaction just above its critical concentration of the ferromagnetic phase using a hybrid Monte-Carlo spin-dynamics method. We find for the first time in finite-range models that the system exhibits a reentrant phase transition from a ferromagnetic phase to a mixed phase of the ferromagnetism and the transverse spin glass.