Aluminium impurities in single crystals of the heavy-fermion superconductor UBe<sub>13</sub>

ORAL

Abstract

We studied the influence of Al incorporation on the heavy fermion superconductor UBe13 to explain the sample dependence of physical properties. Al which substitutes Be in the crystal structure of flux-grown UBe13 single crystals can be detected by combining X-ray diffraction, nuclear magnetic resonance and X-ray spectroscopy. The minute amounts of Al (1-2 at. %) in the structure are located by atomic resolution transmission electron microscopy. Specific heat measurements complement this study and reveal strong influence of the incorporated Al on the physical properties of UBe13.

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Presenters

  • Andreas Leithe-Jasper

    • Max Planck Instiute for Chemical Physics of Solids, MPG

Authors

  • Andreas Leithe-Jasper

    • Max Planck Instiute for Chemical Physics of Solids, MPG

  • Alfred Amon

    • Max Planck Instiute for Chemical Physics of Solids, MPG

  • Eteri Svanidze

    • Max Planck Instiute for Chemical Physics of Solids, MPG
    • Max Planck Inst

  • Paul Simon

    • Max Planck Instiute for Chemical Physics of Solids, MPG

  • Matej Bobnar

    • Max Planck Instiute for Chemical Physics of Solids, MPG

  • Iryna Zelenina

    • Max Planck Instiute for Chemical Physics of Solids, MPG

  • Marcel Naumann

    • Max Planck Institute for Chemical Physics of Solids
    • Max Planck Instiute for Chemical Physics of Solids, MPG

  • Primoz Kozelj

    • Max Planck Instiute for Chemical Physics of Solids, MPG

  • Elena Hassinger

    • Max Planck Institute for Chemical Physics of Solids
    • Max Planck Instiute for Chemical Physics of Solids, MPG

  • Yuri Grin

    • Max Planck Instiute for Chemical Physics of Solids, MPG
    • Max Planck Institute for Chemical Physics of Solids