S Coutinho and D R Tilley 1975 J. Phys. F: Met. Phys. 5 948 doi:10.1088/0305-4608/5/5/021
S Coutinho and D R Tilley
Show affiliationsRaman scattering in a reflection experiment is discussed. It is assumed that coupling to spin flip excitations occurs due to spin-orbit coupling, as in an insulator. Within the tight binding approximation, the polarization selection rules contain one term from single site processes which has the same form as in an insulator, and one from neighbouring site processes which may be different. If the first term is dominant, the vertex coupling the excitations to the incident and scattered light is only weakly momentum dependent and scattering by the stoner excitations is much weaker than magnon scattering. The magnon line is broadened because of the finite skin depth of light in the specimen; for nickel this broadening is greater than the intrinsic linewidth as observed in ferromagnetic resonance experiments.
78.30.-j Infrared and Raman spectra
75.50.-y Studies of specific magnetic materials
75.10.Lp Band and itinerant models
71.70.Ej Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect
Issue 5 (May 1975)
S Coutinho and D R Tilley 1975 J. Phys. F: Met. Phys. 5 948
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