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μ+SR study of heavy-fermion magnetism in Ce(Cu1-xNix)2Ge2

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Abstract

We report muon spin relaxation (μ+SR) studies on the magnetic phase diagram of Ce(Cu1-xNix)2Ge2 polycrystals for 0.5≤ x ≤ 0.8. A sharp magnetic transition, evidenced by the appearance of a fast Gaussian relaxation component σ, has been observed in the x = 0.5 alloy at 4.0 K in zero applied field. The average local field < Bμ> at the stopping sites of the muons, extracted from σ, exhibits a linear temperature dependence. We associate these features with an incommensurate spin density wave (SDW) ordering. Magnetic ordering, either long range or short range, and signatures of non-Fermi liquid behaviour have not been observed down to 2.0 K at x = 0.8.

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Authors and Affiliations

  1. Institute of Physical and Chemical Research (RIKEN), Wako 351-0198, Saitama, Japan

    V.V. Krishnamurthy, I. Watanabe & K. Nagamine

  2. Institute for Materials Structure Science, KEK, Tsukuba, Ibaraki, 305-0801, Japan

    K. Nagamine

  3. Max-Plank-Institut für Chemische Physik fester Stoffe, Dresden, D-01187, Germany

    C. Geibel, G. Sparn & F. Steglich

Authors
  1. V.V. Krishnamurthy
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  2. I. Watanabe
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  3. K. Nagamine
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  4. C. Geibel
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  5. G. Sparn
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  6. F. Steglich
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Krishnamurthy, V., Watanabe, I., Nagamine, K. et al. μ+SR study of heavy-fermion magnetism in Ce(Cu1-xNix)2Ge2 . Hyperfine Interactions 120, 607–610 (1999). https://doi.org/10.1023/A:1017059220157

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  • DOI: https://doi.org/10.1023/A:1017059220157

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