Abstract
It is shown that first-principles inclusion of nonuniform exchange interaction leads to the creation of a new type of generalized shear acoustic wave propagating near the mechanically free surface of a magnet. Criteria are formulated that can be used to specify conditions under which an “exchange” type of surface acoustic wave can exist at the boundary between a magnetic and a nonmagnetic medium once the spectrum of magnetoelastic oscillations of the unbounded magnetic crystal is known.
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Fiz. Tverd. Tela (St. Petersburg) 40, 299–304 (February 1998)
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Tarasenko, S.V. Exchange mechanism for localization of phonons near the surface of a magnetically ordered crystal. Phys. Solid State 40, 272–276 (1998). https://doi.org/10.1134/1.1130291
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DOI: https://doi.org/10.1134/1.1130291