Sato M, Sievers A J
Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Ishikawa 920-1192, Japan.
J Biol Phys. 2009 Feb;35(1):57-72. doi: 10.1007/s10867-009-9135-2. Epub 2009 Feb 21.
This review focuses attention on the experimental studies of intrinsic localized modes (ILMs) produced in driven atomic lattices. Production methods involve the application of modulational instability under carefully controlled conditions. One experimental approach is to drive the atomic lattice far from equilibrium to produce ILMs, the second is to apply a driver of only modest strength but nearby in frequency to a plane wave mode so that a slow transformation from large amplitude standing waves to ILMs takes place. Since, in either case, the number of ILMs produced is small, the experimental observation tool appropriate for this task is four-wave mixing. This nonlinear detection technique makes use of the nonlinearity associated with an ILM to enhance its signal over that produced by the more numerous, but linear, spin waves. The final topic deals with numerical simulations of a nonlinear nanoscale atomic lattice where the new feature is running ILMs.
本综述着重关注在受驱动原子晶格中产生的内禀局域模（ILMs）的实验研究。产生方法涉及在精心控制的条件下应用调制不稳定性。一种实验方法是将原子晶格驱动到远离平衡态以产生ILMs，第二种方法是应用强度适中但频率接近平面波模式的驱动源，从而使从大振幅驻波到ILMs发生缓慢转变。由于在这两种情况下产生的ILMs数量都很少，适用于此任务的实验观测工具是四波混频。这种非线性检测技术利用与ILM相关的非线性来增强其信号，使其超过由数量更多但为线性的自旋波产生的信号。最后一个主题涉及非线性纳米尺度原子晶格的数值模拟，其中新特性是运行的ILMs。
