Studies of the Ferromagnetic Superconductors URhGe and UCoGe

ORAL

Abstract

Superconductivity (SC) cannot cooperatively exist with ferromagnetism (FM) in conventional superconductors, since ferromagnetism would act to destroy Cooper pairs. Thus, in FM superconductors such as URhGe and UCoGe, a more exotic pairing type must exist. I will outline the growth and characterization of URhGe and UCoGe crystals, and our measurements of the FM and SC properties. Our combined results from DC Resistivity, Bulk Magnetometry and Muon Spin Relaxation show FM properties in the samples, including a clear FM transition at 9.5K in the URhGe crystal. We will discuss our results and their implications for the nature of the SC state in these materials.

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Authors

  • Travis Williams

    • McMaster University

  • Adam Aczel

    • McMaster University

  • Weiqiang Yu

    • McMaster University

  • Yasutomo Uemura

    • Columbia University

  • Jeremy Carlo

    • Columbia University

  • Tatsuo Goko

    • TRIUMF

  • Jim Garrett

    • Brockhouse Institute for Materials Research

  • Graeme Luke

    • McMaster University