Non-Fermi liquid behavior of the electrical resistivity at the ferromagnetic quantum critical point

Details Non-Fermi liquid behavior of the electrical resistivity at the ferromagnetic quantum critical point Non-Fermi liquid behavior of the electrical resistivity at the ferromagnetic quantum critical point

2002-07-30

arxiv.org/abs/cond-mat/0207712v2

Physics

Condensed Matter

title changed, added references, paper revised

Scientific paper

We propose a model for the non-Fermi behavior in the proximity of the quantum phase transition induced by the strong polarization of the electrons due to local magnetic moments. The self - consistent Renormalization - Group methods have been used to calculate the temperature dependence of the electrical resistivity and specific heat. The T^{5/3} dependence of resistivity and the T ln T dependence of the specific heat show that the magnetic impurities drive a ferromagnetic quantum phase transition and near the critical point the system present a non-Fermi liquid behavior. The model is in good agreement with the experimental data obtained for Ni_x Pd_{1-x} alloy.

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