Resonant Routing of Spin Waves in YIG Structures with Ring Resonators: Effect of Geometry and External Magnetic Field

Abstract

Yttrium iron garnet (YIG) films with ultra-low magnetic damping are a promising platform for magnonic logic, where logic states are encoded by the presence or absence of a spin-wave signal at the device output. In this work, we investigate the dynamic switching of logic states in YIG-based ring resonator structures by varying the angle of the applied magnetic field and the excitation frequency, without modifying the device geometry.
The study is performed using numerical micromagnetic simulations (mumax3) and analytical models. We show that frequency variation enables selective excitation of the ring's resonant modes and directs the magnon flow into the desired output channel. A key result is the demonstration of the effect of the applied field angle on the dispersion characteristics and the degree of nonreciprocity of spin wave propagation: varying the angle shifts the resonant frequencies and redistributes the coupling coefficients, which is equivalent to switching the logic output between "0" and "1" states.
The obtained results indicate that combined control of the field angle and frequency enables a tunable magnonic logic element with high contrast, paving the way for compact multifunctional devices for magnonic information processing

Speaker

Anna A. Manysheva
Saratov State University, Saratov
Russia

Discussion

Ask question