Resonant driving of magnetization precession in a ferromagnetic layer by coherent monochromatic phonons
Resonant driving of magnetization precession in a ferromagnetic layer by coherent monochromatic phonons
复制标题
DOI：
10.1103/physrevb.92.020404
复制
发表时间：
2015-07-16
影响因子：
3.7
通讯作者：
Bayer, M.
中科院分区：
文献类型：
--
作者：
Jaeger, J. V.;Scherbakov, A. V.;Bayer, M.
我们实现了嵌入到声子法布里-珀罗谐振器中的铁磁薄层中的单色声子对磁化进动的共振驱动。飞秒激光脉冲在10-40 GHz频率范围内激发结构的共振声子模式。通过施加一个外部磁场，我们调谐的进动频率相对于本地化的腔中的声子的频率，并观察到一个巨大的磁化进动的振幅增加时，自由磁化进动和本地化的腔中的声子的频率相等。
We realize resonant driving of the magnetization precession by monochromatic phonons in a thin ferromagnetic layer embedded into a phononic Fabry-Perot resonator. A femtosecond laser pulse excites resonant phonon modes of the structure in the 10-40 GHz frequency range. By applying an external magnetic field, we tune the precession frequency relative to the frequency of the phonons localized in the cavity and observe an enormous increase in the amplitude of the magnetization precession when the frequencies of free magnetization precession and phonons localized in the cavity are equal.