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The present study theoretically investigates for the localized collective excitations in the antiferromagnetic superstructures which appear inside forbidden gaps. Solving full Maxwell’s equations with electromagnetic boundary conditions and using the effective- medium theory, we derive the dispersion relation for localized excitation (surface-guided) modes for two antiferromagnetic superstrutures : a) Junction antiferromagnetic superlattice and antiferromagnet;a nd b) Junction of two antiferromagnetic superlattices coupled by the antiferromagnetic film in the presence of external magnetic field. Numerical applications are made to various antiferromagnetic systems and then are discussed in detail. The results obtained in this study can be utilized to design waveguide devises.
International Conference of Advanced Materials and Manufacturing Technologies
ICAMT
R.T. Tagiyeva Askerbeyli