Manipulation of two magnon scattering amplitude in ferromagnet/antiferromagnet bilayer structure

摘要

Recently, intensive study on the usability of antiferromagnetic materials (AFMs) in spintronics is accelerated because of their robustness against external magnetic fields and potential for terahertz applications. It has been reported that some of AF insulators (AFIs) exhibit highly efficient spin transport properties ; however, these studies have not considered the effect of two magnon scattering (TMS) induced at the interface of ferromagnet (FM) and AFM. TMS generally appears where a non-periodic perturbation exists in crystals and has a critical influence on spin current generation in FMs. Therefore, its interpretation can lead to further understanding of spin transport in AFIs.