对称磁性三明治结构中的界面自旋波及其存在条件

CONDITION FOR THE EXISTENCE OF INTERFACE SPIN WAVES IN A SANDWICHED SYSTEM OF THREE FINITE FERROMAGNETIC FILMS

研究了对称性三明治结构中的界面自旋波的本征值问题，特别是获得了严格的和完全解析的界面自旋波存在的充要条件。

The exact solutions of interface spin waves in a sandwiched system of three of finite ferromagnetic spin chains are investigated by use of the interface rescaling approach.The necessary and sufficient condition for the existence of such interface spin waves is obtained exactly and analytically.