Fig. 3. (Color online) (a) Temperature dependence of T1-1. T1-1 goes to zero with decreasing T (dashed line) at low temperatures below ∼50 K, which is more evident in the T1T)−1 vs. T plot (inset). (b) Korringa ratio RK as a function of temperature. RK is close to unity as expected in a simple metal.
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