Ultrasonic attenuation and velocity measurements in the normal state of the heavy fermion superconductor UPt3

S. W. Lin, M. Levy, Bimal K. Sarma, S. Adenwalla, J. B. Ketterson, D. G. Hinks

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

UPt3 is a superconducting heavy fermion compound showing unconventional properties in the superconducting state. Ultrasonic measurements have played an important role in investigating these properties. Here, we present our longitudinal sound attenuation and velocity measurements in the normal state of UPt3 from 2 K to 300 K, for frequencies ranging from 85 MHz to 850 MHz, in a magnetic field up to 8 T. Attention was focused on the attenuation absorption peak developing at temperatures below 40 K, which was accompanied by a rapid increase in velocity. The center of this peak was located at about 10.5 K and within the experimental resolution, its position was frequency independent. The amplitude of this peak was found to be proportional to the square of the sound frequency. With an increasing applied magnetic field, the center of the peak was found to move to lower temperatures while the amplitude of the peak increased.

Original languageEnglish (US)
Title of host publication1992 Ultrasonics Symposium Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages913-916
Number of pages4
ISBN (Electronic)0780305620
DOIs
StatePublished - 1992
Event1992 Ultrasonics Symposium - Tucson, United States
Duration: Oct 20 1992Oct 23 1992

Publication series

NameProceedings - IEEE Ultrasonics Symposium
Volume1992-October
ISSN (Print)1051-0117

Conference

Conference1992 Ultrasonics Symposium
CountryUnited States
CityTucson
Period10/20/9210/23/92

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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