Monte Carlo modeling the phase diagram of magnets with the Dzyaloshinskii - Moriya interaction

摘要: Abstract We use classical Monte Carlo calculations to model the high-pressure behavior of phase transition in helical magnets. vary values exchange interaction constant J and Dzyaloshinskii-Moriya D , which is equivalent changing spin-spin distances, as occurs real systems under pressure. The system study self-similar at / = its properties are defined by single variable T where temperature. existence first order critically depends on ratio . A variation strongly affects temperature width fluctuation region (the ”hump”) follows from self-similarity. spin evolution constants compression. Our relevant high pressure diagrams magnets MnSi Cu 2 OSeO 3