Microscopic Theory of Damon-Eshbach Modes in Ferromagnetic Films

Details Microscopic Theory of Damon-Eshbach Modes in Ferromagnetic Films Microscopic Theory of Damon-Eshbach Modes in Ferromagnetic Films

2000-08-15

arxiv.org/abs/cond-mat/0008223v1

J. Mag. Mag. Mat. 226, 482 (2001).

Physics

Condensed Matter

Strongly Correlated Electrons

9 pages including figures, Revtex, to appear in the proceedings of the ICM 2000

Scientific paper

10.1016/S0304-8853(00)00977-X

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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