Accurate Computation of the Magnetic Susceptibility for the Normal Phase of Organic Conductors

Details Accurate Computation of the Magnetic Susceptibility for the Normal Phase of Organic Conductors Accurate Computation of the Magnetic Susceptibility for the Normal Phase of Organic Conductors

2000-11-09

arxiv.org/abs/cond-mat/0011169v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 3 figures

Scientific paper

The magnetic susceptibility of the quarter-filled one-dimensional extended Hubbard model is calculated using the density-matrix renormalization group technique. It is found that in the charge gap regime of the model ($U> 4t $ and $V > 2t$), or in the metallic region with important superconductive fluctuations ($U<4t$ and $V>2t$), $\chi(T)$ displays a singularity at T=0 and an inflection point at low temperatures that are similar to what occurs in the spin-half quantum spin chain. These results, whose accuracy outdoes that of any other available technique, are useful data which allow a comparison between theory and experiment in the normal phase of the organic conductors.

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