竞争阶间界面的泵激运动
Pump induced motion of an interface between competing orders
摘要：
我们研究了一个界面的运动，该界面将两个具有不同电子顺序的区域分开，并且在一个短时间的泵驱动系统脱离平衡。使用广义金兹伯格-朗道方法，并假设非平衡驱动的主要作用是瞬时加热系统，我们解决了界面运动方向的问题;换句话说，哪个有序区域在泵后膨胀，哪个区域收缩。我们的分析包括在自由能景观和序参量动态的差异的影响，并确定的情况下，驱动器可能会采取行动，以增加与次显性秩序，例如，当次显性秩序有一个二阶自由能景观，而显性秩序有一个一阶的体积。
英文摘要：
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.
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