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An Analytical Theory of FMR in Bulk Metals (Parallel Configuration). I. Dispersion Relations
Author(s) -
Fraitová D.
Publication year - 1983
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.2221200135
Subject(s) - condensed matter physics , physics , ferromagnetism , dispersion relation , dispersion (optics) , spin wave , quantum electrodynamics , quantum mechanics
A linear solution of Maxwell's equation for the propagation of electromagnetic waves in a ferromagnetic metal in the region of ferromagnetic resonance is presented; the motion of the magnetization vector is described by the Landau‐Lifshits equation (including the exchange effect in the damping term). Dispersion relations (DR) are derived for the roots of the bicubic secular equation, representing three waves of generally combined electromagnetic‐spin‐wave character. They are compared with the DR for the case of low‐conductivity ferromagnets; the crossover effect is discussed.