Magnetic quantum critical point and superconductivity in UPt3 doped with Pd

A de Visser, M J Graf, Pedro Estrela, A Amato, C Baines, D Andreica, F N Gygax, A Schenck

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

Transverse-field muon spin relaxation measurements have been carried out on the heavy-fermion superconductor UPt3 doped with small amounts of Pd. We find that the critical Pd concentration for the emergence of the large-moment antiferromagnetic phase is similar to 0.6at.%Pd. At the same Pd content, superconductivity is completely suppressed. The existence of a magnetic quantum critical point in the phase diagram, which coincides with the critical point for superconductivity, provides evidence for ferromagnetic spin-fluctuation mediated odd-parity superconductivity, which competes with antiferromagnetic order.
Original languageEnglish
Pages (from-to)3005-3008
Number of pages4
JournalPhysical Review Letters
Volume85
Issue number14
DOIs
Publication statusPublished - 2000

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