层间耦合与界面自旋波的存在条件

Interface Coupling and Existence for Interface Spin Waves

本文研究了磁场中层间为铁磁性和反铁磁性耦合的两个半无限铁磁自旋链中的界面自旋波及其存在条件．结果表明：在给定链的参数后，对于铁磁性耦合，最多可存在光学－光学型和光学－声学型两种界面自旋波，而对于反铁磁性耦合。

The existence conditions of interface spin waves (ISW) of coupled two infinte ferromagnetic chains are investigated for the ferro/antiferromagnetic interface coupling.Gaven physical parameters,it is shown that there may exist optical acoustic ISW and optical optical ISW for ferromagnetic interface coupling,but optical acoustic ISW and acoustic acoustic ISW for antiferromagnetic interface coupling.