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Phonon‐Polaritons in Isotropic Ferromagnets I. The Influence of the Magnetization on Surface Phonon‐Polaritons
Author(s) -
Dimitriev O. P.,
Lozovskii V. Z.,
Getsko O. M.
Publication year - 1991
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221660128
Subject(s) - magnetization , condensed matter physics , polariton , phonon , wave vector , ferromagnetism , dispersion (optics) , surface phonon , physics , isotropy , materials science , magnetic field , optics , quantum mechanics
In the frame of a phenomenological approach the propagation of phonon surface polaritons (SP) on an isotropic isolator having non‐zero magnetization is considered. Dispersion relations of SP are presented for following orientations of the magnetization: 1) magnetization in the surface plane and perpendicular to the wave vector of SP; 2) magnetization parallel to the wave vector of SP; 3) magnetization perpendicular to the surface plane It is shown that for the two last geometries new SP arise which are not TM‐waves, and their properties are dependent on the values of medium magnetization and applied magnetic fields.