论文标题
向后的磁表面旋转波在交换耦合的co/feni bilayers中
Backward magnetostatic surface spin waves in exchange coupled Co/FeNi bilayers
论文作者
论文摘要
通过使用Brillouin Light散射（BLS）技术，研究了向后磁体表面旋转波（SWS）在交换耦合CO/feni双层中的传播。在我们的BLS测量中确定了两种类型的SWS模式。它们是磁静力的表面波（MSSW）模式和垂直的站立自旋波（PSSW）模式。从Stokes和反stokes测量结果获得的MSSW的分散关系分别显示出正速和负群速度。具有正相速度和负组速度的反stokes分支，称为向后磁表面模式，起源于双层的磁相互作用。实验数据与理论计算非常吻合。我们的结果对于理解SWS繁殖和微型SWS存储设备很有用。
Propagation of backward magnetostatic surface spin waves (SWs) in exchange coupled Co/FeNi bilayers are studied by using Brillouin light scattering (BLS) technique. Two types of SWs modes were identified in our BLS measurements. They are magnetostatic surface waves (MSSWs) mode and perpendicular standing spin waves (PSSWs) mode. The dispersion relations of MSSWs obtained from the Stokes and Anti-Stokes measurements display respectively positive and negative group velocities. The Anti-Stokes branch with positive phase velocities and negative group velocities, known as backward magnetostatic surface mode originates from the magnetostatic interaction of the bilayer. The experimental data are in good agreement with the theoretical calculations. Our results are useful for understanding the SWs propagation and miniaturizing SWs storage devices.
