Pseudogaps in an Incoherent Metal

Details Pseudogaps in an Incoherent Metal Pseudogaps in an Incoherent Metal

2002-05-16

arxiv.org/abs/cond-mat/0205347v2

Phys. Rev. Lett. 89, 236402 (2002)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 figures, LaTex, relation to work by Parcollet and Georges discussed and reference added

Scientific paper

10.1103/PhysRevLett.89.236402

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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