Non-Fermi liquid behavior in polycrystalline Ce2PdIn8 |
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Authors: | D Kaczorowski A Pikul L Sojka |
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Institution: | a Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wroc?aw 2, Poland b Department of Inorganic Chemistry, Ivan Franko National University of Lviv, Kyryla i Mefodiya St. 6, UA-79005 Lviv, Ukraine |
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Abstract: | We report on the formation of a novel ternary compound Ce2PdIn8 that is isostructural with the heavy-fermion superconductors Ce2CoIn8 and Ce2RhIn8. Its magnetic, electrical transport and thermodynamic properties were studied on polycrystalline samples in wide ranges of temperature and magnetic field strength. The results revealed Ce2PdIn8 to be a paramagnetic Kondo lattice with a coherence temperature of about 12 K. The C/T ratio of the specific heat reaches at 350 mK a strongly enhanced magnitude of about per Ce-atom, thus clearly indicating a heavy-fermion nature of this material. Moreover, a logarithmic divergence of C/T vs. T, observed below 3 K, which is accompanied by a linear temperature dependence of the electrical resistivity below 6 K, hint at a non-Fermi liquid character of the electronic ground state in the new compound reported. |
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Keywords: | Heavy fermions Non-Fermi liquid Cerium intermetallics Ce2PdIn8 |
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