Strain reconfigurable coupling of spin waves in width modulat-ed magnonic crystal waveguide

Summary form only given. Recent progress in the magnon-based electronics can be used as a signal carrier in the magnonic waveguiding structures operating in the GHz and THz frequency range. This paper reports on the experimental and numerical study of the SW propagation in the reconfigurable MC waveguide. Both the experimental measurement and numerical simulations show that the frequency of the center of the forbidden zone is f=5.348 GHz, which corresponds to the Bragg wavenumber k_B=125 1/cm. Using the interdigital SS electrode the doubling of the value of strain induced period and the increasing the modulation depth of the reconfigurable MC is possible. Thus the paper demonstrates that dual H-field and E-field tunability is the key advantage of strain tuned MC. Magnetic tuning can be performed through the variation of a bias magnetic field, while electric tuning is possible due to control of the properties of PZT layer through the variation of an applied electric field.