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

研究了对称磁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．

he exact solutions of interface spin waves in a sandwiched system of three finite ferromag-netic spin chains are investigated by use of the interface rescaling approach. The necessary andsufficient condition for the existence of such interface spin waves is obtained exactly and analyt-cally.