Electronic states and molecular dynamics of single-component molecular conductors [M(tmdt)₂] (M=Ni, Pt) studied by ¹³C and ¹H NMR

الأصل · EN

The molecular conductors [M(tmdt)₂] (M=Ni, Pt) consisting of single molecular species are investigated with ¹³C NMR and ¹H NMR. The temperature dependences of ¹³C NMR shift and relaxation rate provide microscopic evidences for the metallic nature with appreciable electron correlations. Both compounds exhibit an anomalous frequency-dependent enhancement in ¹H nuclear spin-lattice relaxation rate in a wide temperature range. These observations signify the presence of extraordinary molecular motions with low energy excitations.