Hysteresis in ultrasonic attenuation in UPt3 in low magnetic fields

A. Schenstrom*, M. F. Xu, Y. Hong, M. Levy, Bimal K. Sarma, S. Adenwalla, Z. Zhao, J. B. Ketterson, D. G. Hinks

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Ultrasonic measurements on the heavy fermion superconductor UPt3 indicate evidence of the possibility of two or more superconducting phases in a magnetic field. At low fields there is a large hysteresis in the attenuation which was interpreted by Muller et al. as a metastable phase. We report on similar measurements, where in addition to a hysteresis in the attenuation there is an associated hysteretic temperature change. We believe the hysteresis in attenuation to be the result of a temperature increase due to flux jumps. A lower critical field of the order of 10 mT is estimated.

Original languageEnglish (US)
Pages (from-to)353-356
Number of pages4
JournalJournal of The Less-Common Metals
Volume149
Issue numberC
DOIs
StatePublished - Apr 15 1989

ASJC Scopus subject areas

  • Engineering(all)

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