Muon spin relaxation in the heavy fermion system UPt3

✍ Scribed by G.M. Luke; A. Keren; L.P. Le; W.D. Wu; Y.J. Uemura; D.A. Bonn; L. Taillefer; J.D. Garrett

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 237 KB
• Volume: 186-188
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(93)90548-k

✦ Synopsis

We report muon spin rotation/relaxation (~SR) measurements of the heavy fermion superconductor UPt 3. We observe the appearance of a spontaneous internal magnetic field at T = 475 inK, which is about 80 mK below T c. This transition likely corresponds to the lower superconducting transition observed in specific-heat and ultrasound measurements. Our results provide microscopic evidence that the low-temperature/low-field phase in the superconducting phase diagram of UPt~ may break time-reversal symmetry.