Zero-field magnetism in Nd-doped CeRhIn5 under pressure

ORAL

Abstract

Unconventional superconductivity is often found in heavy fermion compounds close to a magnetic instability. Although magnetism and superconductivity may coexist when $T_{N} > T_{c}$, evidence for magnetism is usually suddenly lost when $T_{N} < T_{c}$. Here we study the heavy-fermion compound Ce$_{0.95}$Nd$_{0.05}$RhIn$_{5}$ under pressure by means of electrical resistivity and AC calorimetry measurements. Our results show that, even at zero applied magnetic field, Nd substitution unveils a hidden magnetic instability below the superconducting dome. We examine the similarities and differences between our results and those on Nd-doped CeCoIn$_{5}$ as well as pure CeRhIn$_{5}$ under applied field and pressure. We discuss our results in light of recent calculations that include $d$-wave superconductivity and underlying magnetic correlations.

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Authors

  • Priscila Rosa

    Los Alamos National Laboratory

  • Aaron Oostra

    University of California at Irvine

  • Yongkang Luo

    Los Alamos National Laboratory

  • Nicholas Wakeham

    Los Alamos National Laboratory

  • Filip Ronning

    Los Alamos National Laboratory, Los Alamos, NM 87545, USA, Los Alamos National Laboratory, Los Alamos National Lab

  • Eric Bauer

    Los Alamos National Laboratory, Los Alamos, NM 87545, USA, Los Alamos National Laboratory

  • Zachary Fisk

    University of California Irvine, University of California at Irvine

  • Joe Thompson

    Los Alamos National Laboratory, Los Alamos, NM 87545, USA, Los Alamos National Laboratory