Heavy-Fermions in LiV2O4: Kondo-Compensation vs. Spin-Liquid Behavior?

Details Heavy-Fermions in LiV2O4: Kondo-Compensation vs. Spin-Liquid Behavior? Heavy-Fermions in LiV2O4: Kondo-Compensation vs. Spin-Liquid Behavior?

2000-04-28

arxiv.org/abs/cond-mat/0004493v1

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1088/0953-8984/13/37/307

7Li NMR measurements were performed in the metallic spinel LiV2O4. The temperature dependencies of the line width, the Knight shift and the spin-lattice relaxation rate were investigated in the temperature range 30 mK < T < 280 K. For temperatures T < 1 K we observe a spin-lattice relaxation rate which slows down exponentially. The NMR results can be explained by a spin-liquid behavior and the opening of a spin gap of the order 0.6 K.

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