PARALLEL PUMP SPIN-WAVE INSTABILITY THRESHOLD IN THIN FERROMAGNETIC-FILMS
PARALLEL PUMP SPIN-WAVE INSTABILITY THRESHOLD IN THIN FERROMAGNETIC-FILMS
复制标题
DOI：
10.1016/0304-8853(94)01612-7
复制
发表时间：
1995-03-01
影响因子：
2.7
通讯作者：
DOTSCH, H
中科院分区：
文献类型：
--
作者：
KOSTYLEV, MP;KALINIKOS, BA;DOTSCH, H
提出了铁磁薄膜中自旋波平行泵浦不稳定性阈值的严格理论。偶极和交换相互作用，偶极-偶极杂交的自旋波分支，和磁晶和诱导的各向异性考虑。给出了平行泵浦不稳定性阈值的一般表达式，该表达式可用于计算单层铁磁层或含任意数量铁磁膜的多层结构的阈值。讨论了参变自旋波的偶极-偶极杂化及其非互易传播特性对阈值的影响。
A rigorous theory of parallel pump instability threshold of spin waves in ferromagnetic films is developed. Dipole and exchange interactions, the dipole-dipole hybridization of spin wave branches, and the magnetocrystalline and induced anisotropies are taken into account. Expressions for the parallel pump instability threshold are obtained in general form which can be used to calculate the threshold of a single ferromagnetic layer or a multilayered structure containing an arbitrary number of ferromagnetic films. The influences of the dipole-dipole hybridization of parametrically generated spin waves and of their nonreciprocal propagation properties on the threshold are discussed.