Normal State Properties of Cuprates: t-J Model vs. Experiment

Details Normal State Properties of Cuprates: t-J Model vs. Experiment Normal State Properties of Cuprates: t-J Model vs. Experiment

2000-07-03

arxiv.org/abs/cond-mat/0007032v1

Physics

Condensed Matter

Strongly Correlated Electrons

LaTeX, NATO ARW Proc

Scientific paper

We discuss some recent results for the properties of doped antiferromagnets, obtained within the planar t-J model mainly by the finite-temperature Lanczos method, with the emphasis on the comparison with experimental results in cuprates. Among the thermodynamic properties the chemical potential and entropy are considered, as well as their relation to the thermoelectric power. At the intermediate doping model results for the optical conductivity, the dynamical spin structure factor and spectral functions reveal a marginal Fermi-liquid behaviour, close to experimental findings. It is shown that the universal form of the optical conductivity follows quite generally from the overdamped character of single-particle excitations.

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