Growth Kinetics in a Frustrated System: The Quenched Axial Next-Nearest-Neighbor Ising Model
We have investigated the influence of the frustration parameter, κ, in Monte Carlo quench simulations of the axial next-nearest neighbor Ising (ANNNI) model. Quenches were performed from the high temperature paramagnetic state into both the ferromagnetic and modulated phase fields. For 0<κ<1, the quenches lead to the formation of a glassy phase. For large κ, domains of the modulated phase form and coarsen by the elimination of domain walls which meet at four-fold vertices. Quenches were also performed by discontinuous change of κ from the ferromagnetic regime to values in the modulated phase field at fixed temperature. For 1<κ<2, the modulated phase forms by nucleation and growth. At larger values of κ and long times in the nucleation and growth regime, the defected modulated structure coarsens by the motion and annihilation of domain walls and vertices.
KeywordsDomain Wall Ising Model Glassy Phase Ferromagnetic State Monte Carlo Step
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