Theory of Magneto-elastic coupling in a ferromagnetic thin film mediated by dipolar interaction

Magneto-elastic coupling in magnets has been attracting significant attention. Among various microscopic mechanisms for magneto-elastic coupling, this talk focuses on the dipolar coupling between magnetostatic waves in a ferromagnetic thin film and elastic deformations at the micrometer wavelength scale. Because of the quasi-long-ranged nature of the dipolar interaction, derivation is technically nontrivial and has not been studied. In our presentation by using the Green function method, we derive the coupled equations of motion and analyze the dynamics numerically.