Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Casilla 487-3, Santiago, Chile.
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan.
Phys Rev E. 2018 Jan;97(1-1):012207. doi: 10.1103/PhysRevE.97.012207.
Macroscopic systems forced by the temporal modulation of their parameters exhibit complex interfaces between symmetric states. Here we investigate the origin of the transition from a flat to an oscillating decorated interface. Based on a model that describes a magnetic plane under the influence of an oscillating magnetic field and an extended Josephson junction under the influence of an alternating current, we derive a simple model that accounts for the interface dynamics. Analytically this model allows us to reveal that this transition is a parametric resonance between the frequencies of interface modes and the forcing. Numerical simulations of magnetic systems, extended Josephson junctions, and our simplified model show quite good agreement.
受参数时变驱动的宏观系统表现出对称态之间的复杂界面。在这里，我们研究了从平坦到振荡装饰界面的转变的起源。基于描述在时变磁场下的磁平面和在交流下的扩展约瑟夫森结的模型，我们推导出一个简单的模型，以解释界面动力学。从理论上看，该模型允许我们揭示这种转变是界面模式频率和驱动力之间的参数共振。对磁系统、扩展约瑟夫森结和我们简化模型的数值模拟显示出相当好的一致性。
