μSR and Magnetometry Study of the Type I Superconductor BeAu

ORAL

Abstract

We present Muon Spin Rotation and Relaxation (μSR) measurements as well as demagnetisation corrected magnetometry measurements on polycrystalline samples of the noncentrosymmetric superconductor BeAu. From μSR measurements in a transverse field we find that BeAu is a rare Type I superconducting alloy. To account for demagnetising effects in magnetometry measurements we produced an ellipsoidal sample for which we could calculate the demagnetising factor and found results comparable with our µSR measurments. From both sets of measurements we have constructed a phase diagram from 30 mK to Tc ≈ 3.25K. We also studied the effect of hydrostatic pressure and find that 450 MPa decreases Tc by 44 mK, comparable to the change seen in several elemental type I superconductors.

*We would like to acknowledge funding from the Natural Sciences and Engineering Research Council of Canada as well as the Canadian Institute for Advanced Research

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Presenters

  • James Beare

    • Physics and Astronomy, McMaster University
    • Department of Physics and Astronomy, McMaster University
    • McMaster University

Authors

  • James Beare

    • Physics and Astronomy, McMaster University
    • Department of Physics and Astronomy, McMaster University
    • McMaster University

  • Matthew Nugent

    • McMaster University

  • Murray N Wilson

    • McMaster University

  • Eteri Svanidze

    • Max Planck Institute for Chemical Physics of Solids, Dresden, Germany
    • Max Planck Institute for Chemical Physics of Solids

  • Yipeng Cai

    • Department of Physics and Astronomy, McMaster University
    • McMaster University

  • Alfred Amon

    • Max Planck Institute for Chemical Physics of Solids

  • Andreas Leithe-Jasper

    • Max Planck Institute for Chemical Physics of Solids

  • Zizhou Gong

    • Columbia University

  • Zurab Guguchia

    • Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute
    • Paul Scherrer Institut
    • Princeton University
    • Columbia University
    • Brookhaven National Laboratory

  • Yuri Grin

    • MPI CPfS
    • Max Planck Institute for Chemical Physics of Solids, Dresden, Germany
    • Max Planck Institute for Chemical Physics of Solids

  • Yasutomo J Uemura

    • Columbia University
    • Department of Physics, Columbia University

  • Graeme Luke

    • Department of Physics, McMaster University
    • Physics and Astronomy, McMaster University
    • McMaster University
    • Department of Physics and Astronomy, McMaster University