Externally Driven Interface in 3D Ising Model: A Monte Carlo Study

The morphology and dynamical properties of the 3D Ising model interface are studied. The system (lattice) is simple cubic. A step-shaped inhomogeneous external field is translated into the system. The velocity (Vf) is controlled externally. The moving field interface induces a moving magnetization interface. For low Vf, the magnetization interface moves pinned with the field interface and for large Vf,, it detaches from the field interface. We study the morphology of the generated magnetization interface and the effect of Vf on it. A Vf-dependent series of transitions in the morphology of the magnetization interface is observed. In the 2D model case, the graph between field interface orientation and magnetization interface’s most probable local slope is known as Devil’s staircase. The corresponding diagram in the 3D model is generated. The effect of Vf on the diagram is studied.