The high-field/high-pressure relationship of magnetic order and nematicity in the heavy fermion superconductor CeRhIn<sub>5</sub>

ORAL

Abstract

Recently, a nematic signature, i.e. a sudden resistivity anisotropy above a critical field B* = 28 T, has been observed in CeRhIn5[1]. This heavy fermion antiferromagnet (TN = 3.85 K) superconducts under pressure above pc = 23 kbar, associated with an antiferromagnetic quantum critical point (QCP). The reported nematic behavior survives at ambient pressure only until magnetic order is suppressed at a critical field of Bc =51 T, associated with a second QCP[2,3]. An open question is if and how the two QCPs, B-induced nematicity and p-induced superconductivity (SC) are related.
Here we report high-field (up to 65 T) / high-pressure (up to 40 kbar) studies of magnetotransport in CeRhIn5. The combination of plastic diamond-anvil-cells, pulsed magnets, and focused-ion-beam microstructures enabled us to investigate this region in the (p,T,B) phase diagram. We show that nematicity and SC reside in distinct regions. Our experiments reveal a surprising enhancement of magnetic order in high fields with pressure.
[1] Ronning, F. et al., Nature 548, 313 (2017) [2] Jiao L. et al., PNAS 112, 673 (2015) [3] Rosa, P.F.S. et al., arxiv:1803.01748 (2018)

*We acknowledge the Max Planck Society; the DFG— MO 3077/1-1; the US DOE, BES, MSE; the NSF DMR-1157490 and DMR-1644779 ; and the State of Florida.

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Presenters

  • Toni Helm

    • Max Planck Institute for Chemical Physics of Solids
    • High Magnetic Field Laboratory, Helmholtz Zentrum Dresden Rossendorf

Authors

  • Toni Helm

    • Max Planck Institute for Chemical Physics of Solids
    • High Magnetic Field Laboratory, Helmholtz Zentrum Dresden Rossendorf

  • Audrey Grockowiak

    • National High Magnetic Field Laboratory, Tallahassee, Florida 32310
    • Florida State University
    • Tallahassee, National High Magnetic Field Laboratory

  • Fedor Balakirev

    • Los Alamos National Laboratory
    • Los Alamos National Labs
    • Los Alamos, National High Magnetic Field Laboratory
    • National High Magnetic Field Lab, Los Alamos National Laboratory, Los Alamos, USA
    • National High Magnetic Field Laboratory

  • John Singleton

    • National High Magnetic Field Laboratory, Los Alamos National Laboratory
    • MPA-MAG, Los Alamos National Laboratory
    • National High Magnetic Field Laboratory, Los Alamos National Laboratory, Los Alamos, NM 87545
    • Los Alamos National Laboratory
    • NHMFL, Los Alamos National Labs
    • NHMFL, Los Alamos National Laboratory
    • Los Alamos, National High Magnetic Field Laboratory
    • NHMFL, Los Alamos Natl Lab
    • Los Alamos Natl Lab

  • Kent Shirer

    • Max Planck Institute for Chemical Physics of Solids
    • Max Planck Institute for Chemical Physics of Solids, Dresden, Germany

  • Markus Koenig

    • Max-Planck-Institute for Chemical Physics of Solids
    • Max Planck Institute for Chemical Physics of Solids
    • Max Planck Institute for Chemical Physics of Solids, Dresden, Germany

  • Eric Bauer

    • Los Alamos National Laboratory, Los Alamos, NM 87545, USA
    • Los Alamos National Laboratory
    • MPA-CMMS, Los Alamos National Laboratory, Los Alamos, USA
    • MPA-CMMS, Los Alamos National Laboratory
    • Los Alamos National Laboratory, Los Alamos, New Mexico, USA
    • Los Alamos National Labs

  • Filip Ronning

    • Los Alamos National Laboratory, Los Alamos, NM 87545, USA
    • Los Alamos National Laboratory
    • MPA-CMMS, Los Alamos National Laboratory, Los Alamos, USA
    • MPA-CMMS, Los Alamos National Laboratory
    • Los Alamos National Laboratory, Los Alamos, New Mexico, USA
    • Los Alamos National Labs

  • Stanley W Tozer

    • National High Magnetic Field Laboratory, Tallahassee, Florida 32310
    • Florida State University
    • Tallahassee, National High Magnetic Field Laboratory

  • Philip Moll

    • Ecole polytechnique federale de Lausanne
    • Swiss Federal Institute of Technology in Lausanne
    • École Polytechnique Fédérale de Lausanne (EPFL), Institute of Materials, Lausanne, Switzerland
    • Institute of Materials, Ecole Polytechnique Federale de Lausanne
    • Ecole Polytechnique Federale de Lausanne