The Search for Quantum Criticality in the URu$_{2-x}$Re$_{x}$Si$_{2}$ Phase Diagram

ORAL

Abstract

It has been established that as Re is doped into polycrystalline URu$_{2}$Si$_{2}$, the hidden order/antiferromagnetic and superconducting phases are suppressed, while at intermediate doping, long range ferromagnetism emerges. To further investigate observations of the persistence of non-Fermi liquid behavior well into the ferromagnetic phase, we have prepared single crystals of URu$_{2-x}$Re$_{x}$Si$_{2}$ in the Re concentration range of $0 \leq x \leq 0.6$ and performed magnetization, electrical and thermal transport, and calorimetry measurements at low temperatures down to $0.1$~K.

*This research was supported by the US National Science Foundation and National Nuclear Security Administration under the auspices of the Stewardship Science Academic Alliances.

–

Authors

  • Nicholas Butch

    • Dept. of Physics and IPAPS, University of California, San Diego
    • University of California, San Diego

  • J.R. Jeffries

    • Dept. of Physics and IPAPS, University of California, San Diego

  • B.T. Yukich

    • Dept. of Physics and IPAPS, University of California, San Diego

  • T.A. Sayles

    • Dept. of Physics and IPAPS, University of California, San Diego

  • J. Paglione

    • Dept. of Physics and IPAPS, University of California, San Diego

  • P.-C. Ho

    • Dept. of Physics and IPAPS, University of California, San Diego

  • M.B. Maple

    • Dept. of Physics and IPAPS, University of California, San Diego