Abstract

A ~ - d hybrid electronic system, (DMe-DCNQI) 2 Cu, where the ~ orbital of the organic molecule, DMe-DCNQI, is strongly hybridized with the d xy orbital of Cu, has been studied by 15 N and 13 C NMR at three sites. The analysis of Knight shift, K , local spin susceptibilities in the ~ and d orbitals were determined separately. The ~ and d spin susceptibilities were found to be quite different in magnitude and temperature dependence. Moreover, the Knight shift was separated into those of two constituent bands; a one-dimensional ~ band and a three-dimensional ~ - d band. The relative weight of the band susceptibilities is strongly temperature-dependent. DCNQI: d - ~ Interaction antiferromagnetic and ferromagnetic fluctuations 13 C and 15 N-NMR

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