Domain wall skyrmion-based magnonic crystal
Phys. Rev. B 113, 014402 – Published 5 January, 2026
DOI: https://doi.org/10.1103/y4nd-8d93
Abstract
A magnonic waveguide based on a domain wall (DW) is considered to be a crucial breakthrough toward the realization of magnonic nanocircuits. However, the effective control of spin waves propagating in DWs remains to be explored. Here, we construct a magnonic crystal (MC) by using a chain of the domain wall skyrmions (DWSKs) to manipulate the spin-wave propagation in DWs. We show that the DWSK chain can be created by leveraging the voltage-controlled Dzyaloshinskii-Moriya interaction. The DWSK-based MC opens magnonic band gaps, which can be dynamically adjusted through magnetic fields modulating the DWSK size. Furthermore, the manipulation of spin waves by the DWSK-based MC remains robust in curved DWs, demonstrating its adaptability to complex device architectures. Our work provides an effective method to control the spin-wave propagation in DWs, and it paves the way for designing energy-efficient magnonic nanocircuits.
