Magnon-phonon coupling at the van der Waals interface and its heterostructure

在这个项目中，我们建立了一种通过原子薄的铁磁和反铁磁层状范德华晶体和相关异质结构衬底注入表面声波（saw）的技术，转移到压电LiNbO3衬底上，以研究磁弹性耦合。利用这种技术，我们首次通过向层状三氯化铬（CrCl3）晶体注入GHz表面声波（SAWs），证明了SAWs与反铁磁层状晶体的耦合。在这种层状反铁磁体中，可以在低于尼尔温度的温度下激发反铁磁自旋波模式。

In this project, we have established a technique for injecting surface acoustic waves (SAWs) through atomically thin ferromagnetic and antiferromagnetic layered van der Waals crystals and related heterostructure substrates transferred onto a piezoelectric LiNbO3 substrate to investigate magnetoelastic coupling.Using this technique, we have demonstrated for the first time the coupling of SAWs to antiferromagnetic layered crystals by injecting GHz surface acoustic waves (SAWs) into layered crystalline chromium trichloride (CrCl3). Antiferromagnetic spin wave modes can be excited below the Neel temperature in this layered antiferromagnet.