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Microscopic Theory of Damon-Eshbach Modes in Ferromagnetic Films

R. V. Leite·R. N. Costa Filho
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Abstract

The surface spin wave branches in ferromagnetic films are studied using a microscopic theory which considers both magnetic dipole-dipole and Heisenberg exchange interactions. The dipole terms are expressed in a Hamiltonian formalism, and the dipole sums are calculated in a rapidly convergent form. The Damon-Eshbach surface modes are analyzed for different directions of the spin-wave propagation and also for different ratios of the strength of the dipole interactions relative to the exchange interactions. Numerical results are presented using parameters for Fe and GdCl$_3$.

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R. V. Leite, R. N. Costa Filho. 2000-08-15. Microscopic Theory of Damon-Eshbach Modes in Ferromagnetic Films. https://doi.org/10.1016/s0304-8853(00)00977-x

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