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Pseudogaps in an Incoherent Metal

K. Haule·A. Rosch·J. Kroha·P. Wölfle
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Abstract

How are the properties of a metal changed by strong inelastic scattering? We investigate this question within the two-dimensional t-J model using extended dynamical mean field theory and a generalized non-crossing approximation. Short-ranged antiferromagnetic fluctuations lead to a strongly incoherent single particle dynamics, large entropy and resistance. Close to the Mott transition at low hole doping a pseudogap opens, accompanied by a drop in resistivity and an increase in the Hall constant for both lower temperatures and doping levels. The behavior obtained bears surprising similarity to properties of the cuprates.

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K. Haule, A. Rosch, J. Kroha, P. Wölfle. 2002-06-10. Pseudogaps in an Incoherent Metal. https://doi.org/10.1103/physrevlett.89.236402

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