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キーワード:
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要旨:
We report the results of transport measurements on SrRuO3, Sr3Ru2O7, and
CaRuO3. In SrRuO3 and Sr3Ru2O7, our findings are consistent with the
predictions of Fermi liquid theory, in contrast to previous reports
based on samples with much shorter mean free paths. In CaRuO3, however,
a T-1.5 power law is seen in the resistivity in the high purity samples
studied here. Our work gives concrete evidence that even the metallic
state of the ruthenates is highly sensitive to disorder.
