Electronic states and molecular dynamics of single-component molecular conductors [M(tmdt) $_2$ ] (M=Ni, Pt) studied by $^{13}$ C and $^1$ H NMR

preprint2015arXivOpen access

The molecular conductors [M(tmdt) $_2$ ] (M=Ni, Pt) consisting of single molecular species are investigated with $^{13}$ C NMR and $^1$ H NMR. The temperature dependences of $^{13}$ C 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 $^1$ H nuclear spin-lattice relaxation rate in a wide temperature range. These observations signify the presence of extraordinary molecular motions with low energy excitations.

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Electronic states and molecular dynamics of single-component molecular conductors [M(tmdt) $_2$ ] (M=Ni, Pt) studied by $^{13}$ C and $^1$ H NMR

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Electronic states and molecular dynamics of single-component molecular conductors [M(tmdt)2_22​] (M=Ni, Pt) studied by 13^{13}13C and 1^11H NMR

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Electronic states and molecular dynamics of single-component molecular conductors [M(tmdt) $_2$ ] (M=Ni, Pt) studied by $^{13}$ C and $^1$ H NMR