Physical Properties, Charge Density Waves, and Superconductivity in Ca<sub>3</sub>(Rh<sub>x</sub>Ir<sub>1-x</sub>)<sub>4</sub>Sn<sub>13</sub>

ORAL

Abstract

The coexistence of charge-density wave ordering (CDW) and superconductivity (SC) was studied in the "3-4-13" stannides, Ca3(RhxIr1-x)4Sn13, using transport and magnetic measurements. Long-range CDW order coexists with superconductivity  up to some concentration between x=0.6 and x=0.7 where the CDW transition terminates at the quantum critical point (QCP). Typically for CDW/SC systems, a short-range CDW still persists beyond critical concentration, maybe even up to x=1. Our earlier report of the effects of electron irradiation in the stoichiometric compounds was extended to alloys in this study, including the QCP composition. A large rate of Tc suppression combined with fully-gapped superconductivity point to unconventional pairing in this system.

*This work was supported by the US DOE, Office of Science, BES Materials Science and Engineering Division under contract #DE-AC02-07CH11358.

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Presenters

  • Elizabeth H Krenkel

    • Ames Lab

Authors

  • Elizabeth H Krenkel

    • Ames Lab

  • Makariy A Tanatar

    • Ames Laboratory
    • Iowa State University, Ames Laboratory

  • Sunil Ghimire

    • Iowa State University

  • Kamal R Joshi

    • Iowa State University

  • Erik I Timmons

    • Iowa State University

  • Ruslan Prozorov

    • Iowa State University

  • Marcin Konczykowski

    • Ecole Polytechnique

  • Romain Grasset

    • Ecole Polytechnique

  • Shuzhang Chen

    • State Univ of NY - Stony Brook

  • Cedomir Petrovic

    • Brookhaven National Laboratory