Original scientific paper
Feynman diagrams for spin 1/2 waves in ferromagnets
P. Gosar
; Institute "]ožef Stefan" , Ljubljana
Abstract
A modified Feynman diagram technique for the system of interacting spins ½ is developed and applied to the problem of spin waves in ferromagnets. The effective interaction between spins is calculated. The spectral function for this interaction reveals at low temperatures the presence of the elementary excitations, which can be identified with the usual spin wawes. Further, the damping and the interactions between spin waves are studied.
Keywords
Hrčak ID:
320111
URI
Publication date:
4.8.1969.
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