Izvorni znanstveni članak
Feynman diagrams for spin 1/2 waves in ferromagnets
P. Gosar
; Institute "]ožef Stefan" , Ljubljana
Sažetak
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.
Ključne riječi
Hrčak ID:
320111
URI
Datum izdavanja:
4.8.1969.
Posjeta: 88 *