Strain-manipulated dispersion characteristics of magnonic crystals with Dzyaloshinskii–Moriya interaction and applications on spin-wave devices

Abstract Dispersion characteristics of magnonic crystals have attracted considerable attention because of the potential applications for spin-wave devices. In this work, we investigated the strain-manipulated dispersion characteristics of magnonic crystals with Dzyaloshinskii–Moriya interaction (DMI) and discussed the potential applications in spin-wave devices. Here, the ground states and stabilities of the magnonic crystals were investigated. Then, the strain-manipulated dispersion characteristics of the magnonic crystals based on domains and skyrmions were studied. The simulation results indicated that, the applied strain could manipulate the band widths and the positions of the allowed frequency bands. Finally, the realization of magnonic crystal heterojunctions and potential applications in spin-wave devices, such as filters, diodes, and transistors based on strain-manipulated magnonic crystals were proposed. Our research provides a theoretical foundation for designing tunable spin-wave devices based on strain-manipulated magnonic crystals with DMI.