Functional magnetic waveguides for magnonics

Magnonics, or spin wave based spintronics, is an emerging technology where magnons—quanta for waves—process the information analogous to electronic charges in electronics. We introduce fundamental components of a magnonic device and briefly discuss their electrical control. The magnetic waveguide—an integral part circuit—guides signal (magnon current) desired frequency, vector, phase, amplitude, which are key ingredients computing. Typically, bias field aligns magnetization satisfy anisotropic magnon dispersions low-energy long-wavelength magnons, thus it hinders on-chip integration capability. strategies eliminate requirements such by utilizing self-biased waveguides, on either exchange coupled multi-layer micro-wire dipolar but physically separated chain rhomboid nanomagnets. emphasize that waveguides offer additional functionalities as compared conventional waveguides. In this regard, manipulation waves gating operation presented reconfigurable remanent states waveguide externally controlled microwave current. prospects these bias-free rapidly developing nano-magnonics potential practical realizations magnonic-electronic hybrid technology.