The invention belongs to the technical field of magnetic material
signal transmission, in particular to a
spin wave directional transmission
waveguide structure. According to the
waveguide structure, a
magnetic structure is constructed on a two-dimensional film which is made of ferromagnetic insulating materials and has the DMI effect. The
magnetic structure is composed of a plurality of magnetic domains pointing at the
spin wave transmission direction and a
magnetic domain wall of a special structure between the magnetic domains. The
magnetization directions of the adjacent magnetic domains are opposite. Spin
waves are transmitted through the total reflection mode, and the mode that the incident angle range needed for
spin wave total reflection is changed through an externally-added
electric field is adopted to change the spin
wave transmission direction. The function of the structure is similar to the function of a publicly-known optical
waveguide fiber, and the main difference is that the magnetic insulating materials serve as a medium of the structure, and the spin
waves serve as a carrier of energy and information. According to the spin wave directional transmission waveguide structure, the spin
waves can be transmitted in one direction or two directions according to needs, the transmission efficiency is high, attenuation is small, integration and expansion are easy, and the spin wave directional transmission waveguide structure can be combined with an existing
electronic chip technology easily.