Ultrasonic attenuation measurements on the Kondo behavior of CeCu6

S. W. Lin, Q. Z. Ran, S. Adenwalla, Z. Zhao, John B Ketterson, D. G. Hinks, M. Levy, Bimal K. Sarma

Research output: Contribution to journalConference article

2 Scopus citations

Abstract

The heavy fermion compound CeCu6 demonstrates typical Kondo behavior at low temperatures. Ultrasonic attenuation measurements were performed on a CeCu6 single crystal with frequencies up to 800 MHz over a temperature range from 200 K to 0.5 K. As the temperature was lowered to about 20 K, the attenuation decreased monotonically. However, at temperatures between 2 K to 10 K, the attenuation exhibited a well defined absorption peak. As the temperature was lowered below about 2 K, the attenuation increased monotonically. The amplitude of the absorption peak was proportional to the frequency and the peak moved to higher temperatures when the frequency was increased. This absorption peak can be well fitted by α ∼ ω2τ/(1 + ω2τ2), from which an inverse power law temperature dependence of the relaxation time t is obtained. Crystalline electric fields developed at low temperatures may be responsible for the absorption peak.

Original languageEnglish (US)
Article number234266
Pages (from-to)1005-1008
Number of pages4
JournalProceedings - IEEE Ultrasonics Symposium
DOIs
StatePublished - Jan 1 1991
Event1991 IEEE Ultrasonics Symposium. ULTSYM 1991 - Orlando, United States
Duration: Dec 8 1991Dec 11 1991

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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    Lin, S. W., Ran, Q. Z., Adenwalla, S., Zhao, Z., Ketterson, J. B., Hinks, D. G., Levy, M., & Sarma, B. K. (1991). Ultrasonic attenuation measurements on the Kondo behavior of CeCu6. Proceedings - IEEE Ultrasonics Symposium, 1005-1008. [234266]. https://doi.org/10.1109/ULTSYM.1991.234266