体心立方构型三层磁性体系的自旋波行为研究OA北大核心CSTPCD

In order to understand the spin wave behavior of magnetic thin films with cubic configuration,a three-layer magnetic system with four lattices body-centered structure was constructed under the framework of Heisenberg model.This paper uses linear spin wave theory and delayed Green's function to solve the Hamiltonian of the system,and the spin spectrum is obtained by spectral theorem.The effects of physical parameters on the energy gap and resonance frequency of the system are studied based on the control variable method.The results show that the interlayer anisotropy has relatively small effects on the band gaps and resonant frequencies of the system,while spin quantum number and exchange coupling have significant effects on the individual band gaps and resonant frequencies of the system.The research conclusions provide a theoretical reference for the optimization of related spintronic devices.