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μ+SR Study of Ordering Phenomena in the Heavy-Fermion State of Ce3Pd20Ge6

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Abstract

Magnetic and quadrupolar ordering phenomena in a Ce3Pd20Ge6 single crystal have been investigated by muon spin rotation/relaxation (μ+SR) spectroscopy. We have observed spontaneous precession of muons in zero-field below T N =0.7 K in the antiferromagnetic state. The precession frequency follows the power law: ν(T)=ν(0)(1−T/T N )n. The exponent n=0.43(2) is close to the mean-field value of 0.5. The muon longitudinal spin relaxation rate 1/T 1 is found to be nearly independent of temperature in the range of 0.3 to 2 K, i.e., across either T N or T Q =1.2 K, the quadrupolar ordering temperature. Two likely mechanisms for the temperature independent behavior of 1/T 1 are suggested.

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Authors and Affiliations

  1. Harima Institute/SPring8, RIKEN, 1-1-1 Kouto, Mikazuki, Sayo, Hyogo, 679-5148, Japan

    V. V. Krishnamurthy

  2. Japan Institute of Physical and Chemical Research (RIKEN), Wako, Saitama, 351-198, Japan

    I. Watanabe & K. Nagamine

  3. High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki, 305-0801, Japan

    K. Nagamine

  4. Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8581, Japan

    J. Kitagawa & M. Ishikawa

  5. Center for Low Temperature Science, Tohoku University, Sendai, 980-8578, Japan

    T. Komatsubara

Authors
  1. V. V. Krishnamurthy
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  2. I. Watanabe
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  3. K. Nagamine
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  4. J. Kitagawa
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  5. M. Ishikawa
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  6. T. Komatsubara
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Krishnamurthy, V.V., Watanabe, I., Nagamine, K. et al. μ+SR Study of Ordering Phenomena in the Heavy-Fermion State of Ce3Pd20Ge6 . Hyperfine Interactions 136, 385–389 (2001). https://doi.org/10.1023/A:1020546011282

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  • DOI: https://doi.org/10.1023/A:1020546011282

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