Spin-wave waveguide and spin wave operation circuit

摘要

A spin-wave waveguide includes a ferromagnetic thin film resembling a wire in shape. A part of the ferromagnetic thin film, large in film thickness, is formed at one end of the ferromagnetic thin film, and a part of the ferromagnetic thin film, small in film thickness, and a part of the ferromagnetic thin film, large in film thickness, are alternately formed on the same plane, for at least not less than one cycle. A part of the ferromagnetic thin film, large in film thickness, is formed at the other end of the ferromagnetic thin film, wherein an insulating film, and an electrode film are stacked in this order on the ferromagnetic thin film in the part of the ferromagnetic thin film, large in film thickness.

主权项

1. A spin-wave waveguide comprising:
a ferromagnetic film including a first part, a second part and a third part arranged with the second part extending between the first part and the third part; an insulating film stacked over the first part of the ferromagnetic film; and an electrode film stacked over the insulating film and the first part of the ferromagnetic film, wherein the second part has a film thickness which is smaller than that of the first part and the third part, wherein magnetic anisotropy of the first part of the ferromagnetic film is parallel with a surface of the ferromagnetic film, and wherein magnetic anisotropy of the second part of the ferromagnetic film is perpendicular to the surface of the ferromagnetic film.