Article,

Magnetic susceptibility and spin waves in ferromagnetic metals

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Phys. Rev. B, 24 (11): 6491--6496 (December 1981)
DOI: 10.1103/PhysRevB.24.6491

Abstract

The transverse magnetic susceptibility of a ferromagnetic metal is studied within the framework of the local-density approximation. An expression is derived for the wave-vector- and frequency-dependent susceptibility matrix which does not contain explicit reference to the exchange-correlation potential. This result leads to an explicit formula for the spin-wave stiffness, which is evaluated for nickel.

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