Anomalous Low Temperature States in CeNi2Ge2

Details Anomalous Low Temperature States in CeNi2Ge2 Anomalous Low Temperature States in CeNi2Ge2

1998-12-08

arxiv.org/abs/cond-mat/9812133v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages REVTEX, 4 Postscript figures

Scientific paper

Ambient pressure studies on high purity single crystals of the stoichiometric 4f-electron metal CeNi2Ge2 reveal anomalous low temperature forms of the resistivity which challenge our understanding of the metallic state. Comparisons are made with the isostructural and isoelectronic compound CePd2Si2 near the border of magnetism at high pressure, and possible reasons for this novel non-Fermi liquid form of the resistivity are discussed. Phase diagrams of further anomalies are presented, which involve a loss of resistance at low temperature in some samples of CeNi2Ge2 and unexpected high pressure phases.

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