Abstract
We have measured the electrical resistance of the filled skutterudite SmRu 4P 12, which exhibits a metal–insulator (MI) transition at T MI = 16 K, at high pressures up to 15 GPa. With increasing pressure, the semiconductor-like resistance was suppressed. We observed metallic behavior in the resistance above 3.5 GPa, while semiconductor-like increase of the resistance was observed below 2 K. Two characteristic anomalies below T MI, a peak and a kink in the resistance curve, are observed at T 1 and T 2.
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