Renormalization group approach of itinerant electron systems near the Lifshitz point

Details Renormalization group approach of itinerant electron systems near the Lifshitz point Renormalization group approach of itinerant electron systems near the Lifshitz point

1999-02-11

arxiv.org/abs/cond-mat/9902167v1

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, Revtex

Scientific paper

10.1103/PhysRevB.61.3247

Using the renormalization approach proposed by Millis for the itinerant electron systems we calculated the specific heat coefficient $\gamma(T)$ for the magnetic fluctuations with susceptibility $\chi^{-1}\sim |\delta+\omega|^\alpha+f(q)$ near the Lifshitz point. The constant value obtained for $\alpha=4/5$ and the logarithmic temperature dependence, specific for the non-Fermi behavior, have been obtained in agreement with the experimental dat.

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