Study of Spin-Wave Mode Coupling and Band Structure in Magnetostatic Crystal

Abstract

Magnetostatic crystals are magnetic materials with a periodic structure, and the coupling of their spin-wave modes and band structure has a significant impact on their dynamic behavior and applications. This paper investigates the spin-wave mode coupling mechanism, the evolution of the band structure, and the regulation methods within magnetostatic crystals. It explores their potential applications in fields such as spintronics and quantum computing. The study shows that the coupling of spin waves depends not only on exchange interactions but is also influenced by magnetic anisotropy, nonlinear effects, and external fields. The coupling of spin-wave modes can lead to the reconstruction of the band structure, affecting the propagation characteristics and stability of spin waves. Methods for regulating the band structure, such as external magnetic field adjustments, crystal geometric design, and nonlinear coupling, provide new pathways for optimizing spin-wave propagation characteristics. These studies offer theoretical support and a technical foundation for fields such as quantum information processing, low-power spin-wave communication, and spin current control.