Abstract

Magnetic and structural studies of giant metal (M)-insulator (I)-metal reentrant transitions in the partially deuterated molecular conductors (DMe-DCNQI- d n ) 2 Cu ( n =2, 3) are presented. In the insulating phase, Curie-Weiss-like susceptibilities with reduced Curie constants and diffusive satellite reflections showing a threefold superstructure were observed. The results are discussed in terms of novel electronic states associated with the 3D narrow ` d -band' in the 1D 2 p π conduction band.

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