On the Magnon Spectrum of Antiferromagnetically Aligned Bilayer Films |
| H. Puszkarski, B. Kołodziejczak Surface Physics Division, Institute of Physics, A. Mickiewicz University, Matejki 48/49, 60-769 Poznań, Poland A. Akjouj, B. Djafari-Rouhani and L. Dobrzynski Laboratoire de Dynamique et Structure des Matériaux Moléculaires, Unité Associeé au CNRS 801, Université des Sciences et Techniques de Lille I, 59655 Villeneuve d'Ascq Cedex, France |
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| We deal with spin-wave propagation in two antiferromagnetically aligned sublayers forming one bilayer film owing to the antiferromagnetic exchange coupling assumed to exist at the film interface. We get the following picture: as the spin wave traverses the interface, the creation of a spin-reversal in the one sublayer becomes an annihilation in the other sublayer. This feature is expressed by the non-conventional type of normalization condition of the spin-wave amplitudes. |
| DOI: 10.12693/APhysPolA.83.677 PACS numbers: 75.70.-i, 75.50.Ee |