Magnetic quantum critical point and superconductivity in UPt3 doped with Pd

A. de Visser; M. J. Graf; P. Estrela; A. Amato; C. Baines; D. Andreica; F. N. Gygax; A. Schenck

doi:10.1103/PhysRevLett.85.3005

Magnetic quantum critical point and superconductivity in UPt3 doped with Pd

Strongly Correlated Electrons 2009-10-31 v2 Superconductivity

Authors: A. de Visser , M. J. Graf , P. Estrela , A. Amato , C. Baines , D. Andreica , F. N. Gygax , A. Schenck

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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 ~0.6 at.%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.

Keywords

quantum critical point superconductivity UPt3 Pd doping antiferromagnetic order ferromagnetic spin fluctuations odd-parity superconductivity

Cite

@article{arxiv.cond-mat/0006321,
  title  = {Magnetic quantum critical point and superconductivity in UPt3 doped with Pd},
  author = {A. de Visser and M. J. Graf and P. Estrela and A. Amato and C. Baines and D. Andreica and F. N. Gygax and A. Schenck},
  journal= {arXiv preprint arXiv:cond-mat/0006321},
  year   = {2009}
}

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4 pages (includes 3 figures); postscript file

Magnetic quantum critical point and superconductivity in UPt3 doped with Pd

Abstract

Keywords

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