Columnar Fluctuations as a Source of Non-Fermi-Liquid Behavior in Weak Metallic Magnets

Details Columnar Fluctuations as a Source of Non-Fermi-Liquid Behavior in Weak Metallic Magnets Columnar Fluctuations as a Source of Non-Fermi-Liquid Behavior in Weak Metallic Magnets

2010-03-25

arxiv.org/abs/1003.4809v3

Physics

Condensed Matter

Strongly Correlated Electrons

4pp, 4 figures

Scientific paper

It is shown that columnar fluctuations, in conjunction with weak quenched disorder, lead to a T^{3/2} temperature dependence of the electrical resistivity. This is proposed as an explanation of the observed non-Fermi-liquid behavior in the helimagnet MnSi, with one possible realization of the columnar fluctuations provided by skyrmion lines that have independently been proposed to be present in this material.

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