Artikel,

Spin-wave interactions in ultrathin ferromagnetic films: The dipole-exchange regime

, , und .
SOLID STATE COMMUNICATIONS, 108 (7): 439-443 (1998)
DOI: 10.1016/S0038-1098(98)00379-2

Zusammenfassung

A perturbation formalism is employed to study nonlinear processes for the interactions between the discrete spin waves in ferromagnetic films, taking account of both dipole-dipole and exchange coupling. By contrast with previous macroscopic theories of spin-wave interactions the dipolar terms are treated within a Hamiltonian method to obtain results applicable to ultrathin films. The roles of three-magnon and four-magnon processes in the spin-wave energy shift and damping are evaluated and numerical applications to EuO are discussed. (C) 1998 Elsevier Science Ltd. All rights reserved.

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