On giant amplification of effects of phonon nonspecular reflection at a solitary interface between magnetic and non-magnetic media

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Abstract

On the secluded interface of semi-infinite magnetic and non-magnetic media, hybridiza-tion of magnetoelastic interaction with inhomogeneous exchange or magneto-dipole interaction can lead to the formation of symmetry-protected bound states in the radiation spectrum of the leaky surface magnon polarons. If a quasi-plane bulk elastic wave falls on the surface of a magnetic medium from outside, and the wave parameters approach to the parameters of the surface “dark” state of the above mentioned type, the nonspecular reflection effects of the first order increase unrestrictedly (in the non-dissipative approximation).

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About the authors

Yu. V. Gulyaev

Institute of Radio Engineering and Electronics named after Kotelnikov, Russian Academy of Sciences

Email: shavrov@cplire.ru

Academician of the RAS

Russian Federation, Moscow

O. S. Sukhorukova

Donetsk State University; Donetsk Institute for Physics and Engineering named after Galkin

Email: shavrov@cplire.ru
Russian Federation, Donetsk; Donetsk

A. S. Tarasenko

Donetsk Institute for Physics and Engineering named after Galkin

Email: shavrov@cplire.ru
Russian Federation, Donetsk

S. V. Tarasenko

Donetsk Institute for Physics and Engineering named after Galkin

Email: shavrov@cplire.ru
Russian Federation, Donetsk

V. G. Shavrov

Institute of Radio Engineering and Electronics named after Kotelnikov, Russian Academy of Sciences

Author for correspondence.
Email: shavrov@cplire.ru
Russian Federation, Moscow

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2. Fig. 1. Dependence of the maximum value of the Schoch displacement ∆S ≡ ∆(h = hN(ω), ϑ) on the degree of proximity of the angle of incidence of a quasi-plane wave to the point of formation of a surface symmetrically protected SSC (3), (19), (20) (ϑ = 0).

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