论文标题
泵感应竞争订单之间的界面运动
Pump induced motion of an interface between competing orders
论文作者
论文摘要
我们研究了一个界面的运动，该界面将两个区域与不同的电子订单分开，这是在短持续时间泵之后，将系统从平衡中驱逐出来。使用广义的金茨堡 - 兰道方法，并假设非平衡驱动器的主要影响是瞬时加热系统，我们解决了界面运动方向的问题；换句话说，秩序的区域会扩展并在泵后收缩。我们的分析包括自由能景观差异的影响以及参数动力学的效果，并确定驱动器可以起作用以增加与亚偏序相关的体积的情况，例如，当亚分手级有二阶自由能环境而主导阶的二阶自由度阶时，而主导级别则具有第一阶。
We study the motion of an interface separating two regions with different electronic orders following a short duration pump that drives the system out of equilibrium. Using a generalized Ginzburg-Landau approach and assuming that the main effect of the nonequilibrium drive is to transiently heat the system we address the question of the direction of interface motion; in other words, which ordered region expands and which contracts after the pump. Our analysis includes the effects of differences in free energy landscape and in order parameter dynamics and identifies circumstances in which the drive may act to increase the volume associated with the subdominant order, for example when the subdominant order has a second order free energy landscape while the dominant order has a first order one.
