论文标题
独立的金属铁磁性多层结构中的共振声子 - 马格诺的相互作用
Resonant phonon-magnon interactions in free-standing metal-ferromagnet multilayer structures
论文作者
论文摘要
我们分析了垂直的旋转波模式（交换元音）和自由式杂交金属金属Ferromagnet双层和三层结构中的站立垂直自旋模式（交换元音）和纵向声音子模式之间的谐振磁弹性相互作用。铁磁层充当磁腔，而所有金属层都控制着声振动的频率和本征模。这里提出的设计允许在声子和磁子之间实现和调整光谱和空间模式，从而导致其强烈的谐振相互作用。对金尼克多层的逼真的模拟表明，扫描外部磁场应允许在从数十GHz到数百个GHz的广泛频率中，可以在各种频率下观察到单个镁和声子模式之间的共识，从而可以通过多层设计来细微调整。我们的结果将使系统的研究以及对各个声子和磁子模式之间的磁弹性耦合的深刻理解，直到伟大的当代基本和应用兴趣的频率。
We analyze resonant magneto-elastic interactions between standing perpendicular spin wave modes (exchange magnons) and longitudinal acoustic phonon modes in free-standing hybrid metal-ferromagnet bilayer and trilayer structures. Whereas the ferromagnetic layer acts as a magnetic cavity, all metal layers control the frequencies and eigenmodes of acoustic vibrations. The here proposed design allows for achieving and tuning the spectral and spatial modes overlap between phonons and magnons that results in their strong resonant interaction. Realistic simulations for gold-nickel multilayers show that sweeping the external magnetic field should allow for observing resonantly enhanced interactions between individual magnon and phonon modes in a broad range of frequencies spanning from tens of GHz up to several hundreds of GHz, which can be finely tuned through the multilayer design. Our results would enable the systematic study and the deep understanding of resonantly enhanced magneto-elastic coupling between individual phonon and magnon modes up to frequencies of great contemporary fundamental and applied interest.
