声子对磁子 Kittel 模式间角动量的相干长程转移
介观与纳米尺度物理
2020-03-13 v3 材料科学
摘要
我们报道了由两块钇铁石榴石(YIG)薄膜外延生长在 0.5 mm 厚非磁性钆镓石榴石(GGG)基板两侧构成的电绝缘磁性双层在正常构型下的铁磁共振。观察到一个干涉图样,并将其解释为两个 YIG 层磁化动力学通过站立横向声波以同相或反相方式的强耦合,这些声波通过磁弹性相互作用激发。这种由圆偏振声子通过非磁性材料在宏观距离上对角动量的相干中介,可望用于未来信息技术。
引用
@article{arxiv.1905.12523,
title = {Coherent long-range transfer of angular momentum between magnon Kittel modes by phonons},
author = {Kyongmo An and Artem N. Litvinenko and Ryuhei Kohno and Aufa A. Fuad and Vladimir V. Naletov and Laurent Vila and Ursula Ebels and Grégoire de Loubens and Hervé Hurdequint and Nathan Beaulieu and Jamal Ben Youssef and Nicolas Vukadinovic and Gerrit E. W. Bauer and Andrei N. Slavin and Vasil S. Tiberkevich and Olivier Klein},
journal= {arXiv preprint arXiv:1905.12523},
year = {2020}
}