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Non-monotonic pressure dependence of high-field nematicity and magnetism in CeRhIn5

Author

Listed:
  • Toni Helm

    (Max Planck Institute for Chemical Physics of Solids
    Helmholtz-Zentrum Dresden-Rossendorf)

  • Audrey D. Grockowiak

    (National High Magnetic Field Laboratory)

  • Fedor F. Balakirev

    (MS-E536, Los Alamos National Laboratory)

  • John Singleton

    (MS-E536, Los Alamos National Laboratory)

  • Jonathan B. Betts

    (MS-E536, Los Alamos National Laboratory)

  • Kent R. Shirer

    (Max Planck Institute for Chemical Physics of Solids)

  • Markus König

    (Max Planck Institute for Chemical Physics of Solids)

  • Tobias Förster

    (Helmholtz-Zentrum Dresden-Rossendorf)

  • Eric D. Bauer

    (Los Alamos National Laboratory)

  • Filip Ronning

    (Los Alamos National Laboratory)

  • Stanley W. Tozer

    (National High Magnetic Field Laboratory)

  • Philip J. W. Moll

    (Max Planck Institute for Chemical Physics of Solids
    École Polytechnique Fédérale de Lausanne)

Abstract

CeRhIn5 provides a textbook example of quantum criticality in a heavy fermion system: Pressure suppresses local-moment antiferromagnetic (AFM) order and induces superconductivity in a dome around the associated quantum critical point (QCP) near pc ≈ 23 kbar. Strong magnetic fields also suppress the AFM order at a field-induced QCP at Bc ≈ 50 T. In its vicinity, a nematic phase at B* ≈ 28 T characterized by a large in-plane resistivity anisotropy emerges. Here, we directly investigate the interrelation between these phenomena via magnetoresistivity measurements under high pressure. As pressure increases, the nematic transition shifts to higher fields, until it vanishes just below pc. While pressure suppresses magnetic order in zero field as pc is approached, we find magnetism to strengthen under strong magnetic fields due to suppression of the Kondo effect. We reveal a strongly non-mean-field-like phase diagram, much richer than the common local-moment description of CeRhIn5 would suggest.

Suggested Citation

  • Toni Helm & Audrey D. Grockowiak & Fedor F. Balakirev & John Singleton & Jonathan B. Betts & Kent R. Shirer & Markus König & Tobias Förster & Eric D. Bauer & Filip Ronning & Stanley W. Tozer & Philip , 2020. "Non-monotonic pressure dependence of high-field nematicity and magnetism in CeRhIn5," Nature Communications, Nature, vol. 11(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-17274-6
    DOI: 10.1038/s41467-020-17274-6
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