【摘要】 计入外磁场、体和界面单轴各向异性后，研究了铁磁和反铁磁层间耦合的Ａ－Ｂ－Ａ三链系统中的光学界面自旋波及其存在的充要条件．结果发现，在三链系统中，有两种不同类型的光学界面自旋波，它们在不同界面各向异性条件下，均可存在０～２个自旋波解更多还原

【Abstract】 The model of a ferromagnetic A B A system,described by a Heisenberg Hamiltonian involving the interaction between nearest neighbors,is investigated.Our theory holds for arbitrary external magnetic field,ferromagnetic or antiferromagnetic interface exchange coupling and arbitrary easy axis(unaxial) volume and interface anisotropy.The exact conditions for the existence of Optical interface spin waves (OISW) are obtained.It has been found there are two types of OISW in this system,and zero to two solutions can exist for each type under certain circumstance.更多还原