Article,

Transverse magnetic susceptibility in the local exchange approximation

, and .
Journal of Physics F: Metal Physics, 5 (11): 2119-2128 (1975)

Abstract

The frequency- and wavevector-dependent transverse magnetic spin susceptibility matrix chi $_st$( rho , omega ) for a ferromagnet is studied at T=0K within the local exchange (or X alpha ) approximation. General formulae are obtained for a system of Bloch electrons. It is shown that spin waves are obtained as elementary excitations. Applications are made to the model of a ferromagnetic electron gas.

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