Abstract
Electronic properties originated from the strong correlation have been examined for both metallic and insulating states in organic conductor, DCNQI-Cu salt by use of a periodic Anderson model with electron-phonon interaction. The local constraint imposed on the d -electron in the Cu atom is taken into account in terms of a method of the slave-boson. Compared with the previous mean-field calculation which corresponds to the global constraint, we have found novel aspects that the transition temperature is suppressed and that the magnetic susceptibility of the insulating state exhibits the temperature dependence of the Curie law. These results are in favor of the explanation of the experimental results.
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