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Journal of Low Temperature Physics

, Volume 161, Issue 1–2, pp 134–147 | Cite as

The Superconducting Ferromagnet UCoGe

  • A. Gasparini
  • Y. K. Huang
  • N. T. Huy
  • J. C. P. Klaasse
  • T. Naka
  • E. Slooten
  • A. de Visser
Open Access
Article

Abstract

The correlated metal UCoGe is a weak itinerant ferromagnet with a Curie temperature T C=3 K and a superconductor with a transition temperature T s=0.6 K. We review its basic thermal, magnetic—on the macro and microscopic scale—and transport properties, as well as the response to high pressure. The data unambiguously show that superconductivity and ferromagnetism coexist below T s=0.6 K and are carried by the same 5f electrons. We present evidence that UCoGe is a p-wave superconductor and argue that superconductivity is mediated by critical ferromagnetic spin fluctuations.

Keywords

Superconducting ferromagnet p-wave superconductor Magnetic quantum critical point Critical spin fluctuations 

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Copyright information

© The Author(s) 2010

Authors and Affiliations

  • A. Gasparini
    • 1
  • Y. K. Huang
    • 1
  • N. T. Huy
    • 1
    • 3
  • J. C. P. Klaasse
    • 1
  • T. Naka
    • 2
  • E. Slooten
    • 1
  • A. de Visser
    • 1
  1. 1.Van der Waals-Zeeman InstituteUniversity of AmsterdamAmsterdamThe Netherlands
  2. 2.National Research Institute for Materials ScienceTsukubaJapan
  3. 3.Hanoi Advanced School of Science and TechnologyHanoi University of TechnologyHanoiVietnam

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