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Interplay of hidden orbital order and superconductivity in CeCoIn5

Author

Listed:
  • Weijiong Chen

    (University of Oxford)

  • Clara Neerup Breiø

    (University of Copenhagen)

  • Freek Massee

    (Laboratoire de Physique des Solides (CNRS UMR 8502), Bâtiment 510, Université Paris-Sud/Université Paris-Saclay)

  • Milan P. Allan

    (Leiden University)

  • ‪Cedomir Petrovic

    (Brookhaven National Laboratory)

  • J. C. Séamus Davis

    (University of Oxford
    Cornell University
    University College Cork
    Max-Planck Institute for Chemical Physics of Solids)

  • Peter J. Hirschfeld

    (University of Florida)

  • Brian M. Andersen

    (University of Copenhagen)

  • Andreas Kreisel

    (University of Copenhagen
    Universität Leipzig)

Abstract

Visualizing atomic-orbital degrees of freedom is a frontier challenge in scanned microscopy. Some types of orbital order are virtually imperceptible to normal scattering techniques because they do not reduce the overall crystal lattice symmetry. A good example is dxz/dyz (π,π) orbital order in tetragonal lattices. For enhanced detectability, here we consider the quasiparticle scattering interference (QPI) signature of such (π,π) orbital order in both normal and superconducting phases. The theory reveals that sublattice-specific QPI signatures generated by the orbital order should emerge strongly in the superconducting phase. Sublattice-resolved QPI visualization in superconducting CeCoIn5 then reveals two orthogonal QPI patterns at lattice-substitutional impurity atoms. We analyze the energy dependence of these two orthogonal QPI patterns and find the intensity peaked near E = 0, as predicted when such (π,π) orbital order is intertwined with d-wave superconductivity. Sublattice-resolved superconductive QPI techniques thus represent a new approach for study of hidden orbital order.

Suggested Citation

  • Weijiong Chen & Clara Neerup Breiø & Freek Massee & Milan P. Allan & ‪Cedomir Petrovic & J. C. Séamus Davis & Peter J. Hirschfeld & Brian M. Andersen & Andreas Kreisel, 2023. "Interplay of hidden orbital order and superconductivity in CeCoIn5," Nature Communications, Nature, vol. 14(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-38760-7
    DOI: 10.1038/s41467-023-38760-7
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    References listed on IDEAS

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    1. P. Chandra & P. Coleman & J. A. Mydosh & V. Tripathi, 2002. "Hidden orbital order in the heavy fermion metal URu2Si2," Nature, Nature, vol. 417(6891), pages 831-834, June.
    2. Rafael M. Fernandes & Amalia I. Coldea & Hong Ding & Ian R. Fisher & P. J. Hirschfeld & Gabriel Kotliar, 2022. "Iron pnictides and chalcogenides: a new paradigm for superconductivity," Nature, Nature, vol. 601(7891), pages 35-44, January.
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