Non-Fermi liquid behavior in nearly charge ordered layered metals

Details Non-Fermi liquid behavior in nearly charge ordered layered metals Non-Fermi liquid behavior in nearly charge ordered layered metals

2006-01-20

arxiv.org/abs/cond-mat/0601482v2

Phys. Rev. Lett. 96, 216402 (2006)

Physics

Condensed Matter

Strongly Correlated Electrons

accepted in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.96.216402

Non-Fermi liquid behavior is shown to occur in two-dimensional metals which are close to a charge ordering transition driven by the Coulomb repulsion. A linear temperature dependence of the scattering rate together with an increase of the electron effective mass occur above T*, a temperature scale much smaller than the Fermi temperature. It is shown that the anomalous temperature dependence of the optical conductivity of the quasi-two-dimensional organic metal alpha-(BEDT-TTF)2MHg(SCN)4, with M=NH4 and Rb, above T*=50-100 K, agrees qualitatively with our predictions for the electronic properties of nearly charge ordered two-dimensional metals.

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