Abstract
We develop the self-consistent renormalization theory of spin fluctuations (the SCR theory) for weak antiferromagnetic metals with the single band to the SCR theory with the degenerate bands. The longitudinal spin fluctuations and the longitudinal dynamical susceptibility based on the Hubbard model with the degenerate bands are investigated. As a result, the longitudinal spin fluctuations and the longitudinal dynamical susceptibility are increased with the degeneracy of the band. The Neel temperature is lowered with our increasing the degeneracy of the band.
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