Accurate Computation of the Magnetic Susceptibility for the Normal Phase of Organic Conductors
Moukouri, S.
Original · EN
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), χ(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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