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Modification of the spin-wave dispersion law in multilayer films by changes in the symmetry of the boundary conditions

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Abstract

The present paper is the first attempt to study the transformation of spin-wave resonance spectra when symmetric boundary conditions are smoothly replaced by asymmetric. The transition is done by gradually reducing the thickness of one of the layers in a three-layer film. Spin deexcitation is caused by a dissipation mechanism. We find that in the transition region between symmetric and asymmetric boundary conditions the dispersion curve experiences a break, whose position depends on the degree of deexcitation (the thickness of the upper layer). The break is caused by the appearance of asymmetric transitional spin-wave modes, which cannot be excited under symmetric boundary conditions.

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Authors and Affiliations

  1. N. P. Ogaryov Mordovian State University, 430000, Saransk, Russia

    A. M. Zyuzin & A. G. Bazhanov

Authors
  1. A. M. Zyuzin
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  2. A. G. Bazhanov
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Zh. Éksp. Teor. Fiz. 111, 1667–1673 (May 1997)

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Zyuzin, A.M., Bazhanov, A.G. Modification of the spin-wave dispersion law in multilayer films by changes in the symmetry of the boundary conditions. J. Exp. Theor. Phys. 84, 912–915 (1997). https://doi.org/10.1134/1.558230

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