Muon spin rotation and relaxation in Pr<sub>1-x</sub>Nd<sub>x</sub>Os<sub>4</sub>Sb<sub>12</sub>: superconductivity and magnetism in Pr-rich alloys

POSTER

Abstract

The Pr-rich end of the alloy series Pr1−xNdxOs4Sb12 has been studied using muon spin rotation and relaxation. The end compound PrOs4Sb12 is an unconventional heavy-fermion superconductor, which exhibits a spontaneous magnetic field in the superconducting phase associated with broken time-reversal symmetry. No spontaneous field is observed in the Nd-doped alloys for x ≥ 0.05. The superfluid density is insensitive to Nd concentration, and no Nd3+ static magnetism is found down to the lowest temperatures of measurement. Together with the slow suppression of the superconducting transition temperature with Nd doping, these results suggest anomalously weak coupling between Nd spins and conduction-band states. [1]
[1] P.-C. Ho et al., arXiv:1910.01757

*Research at CSU-Fresno is supported by NSF DMR-1905636; at UCSD by US DOE DE-FG02-04ER46105 and NSF DMR-1810310, at CSU-LA by NSF DMR-1523588 and HRD-1547723; at Fudan U. by National Key Research and Development Program of China (Grant No. 2017YFA0303104); at Hokkaido U. by JSPS KAKENHI JP15KK0146, JP15H05885, and JP18H04297.

Presenters

  • Pei-Chun Ho

    • Physics, California State University, Fresno
    • Department of Physics, California State University, Fresno

Authors

  • Pei-Chun Ho

    • Physics, California State University, Fresno
    • Department of Physics, California State University, Fresno

  • Douglas E MacLaughlin

    • Physics, University of California, Riverside

  • M Brian Maple

    • Department of Physics, University of California, San Diego
    • UCSD
    • University of California, San Diego
    • physics, University of Califormia, San Diego
    • Departement of Physics, University fo California, San Diego
    • Physics, University of California, San Diego

  • Lei Shu

    • Physics, Fudan University

  • Adrian Hillier

    • Rutherford Appleton Lab
    • ISIS Neutron and Muon Sources, Science & Technology Facilities Council
    • ISIS facility, STFC Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Oxfordshire OX11 0QX, United Kingdom

  • Oscar Bernal

    • CAL State University, Los Angeles
    • Physics, California State University, Los Angeles
    • Cal State Univ LA

  • Tatsuya Yanagisawa

    • Physics, Hokkaido University
    • Department of Physics, Hokkaido University

  • P. K Biswas

    • Rutherford Appleton Lab
    • muon, ISIS pulse neutron and muon source
    • ISIS Neutron and Muon Sources, Science & Technology Facilities Council

  • Jian Zhang

    • Physics, Fudan University

  • Cheng Tan

    • Physics, Fudan University

  • Shoji D Hishida

    • Physics, California State University, Fresno

  • Taylor McCullough-Hunter

    • Physics, Hokkaido University