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Kitaev interactions through extended superexchange pathways in the $${j}_{{\mathsf{eff}}}=1/2$$ j eff = 1 / 2 Ru3+ honeycomb magnet RuP3SiO11

Author

Listed:
  • Aly H. Abdeldaim

    (University of Birmingham
    ISIS Neutron and Muon Source
    Diamond Light Source)

  • Hlynur Gretarsson

    (Deutsches Elektronen-Synchrotron DESY)

  • Sarah J. Day

    (Diamond Light Source)

  • M. Duc Le

    (ISIS Neutron and Muon Source)

  • Gavin B. G. Stenning

    (ISIS Neutron and Muon Source)

  • Pascal Manuel

    (ISIS Neutron and Muon Source)

  • Robin S. Perry

    (ISIS Neutron and Muon Source
    University College London)

  • Alexander A. Tsirlin

    (University of Leipzig)

  • Gøran J. Nilsen

    (ISIS Neutron and Muon Source
    University of Stavanger)

  • Lucy Clark

    (University of Birmingham)

Abstract

Magnetic materials are composed of the simple building blocks of magnetic moments on a crystal lattice that interact via magnetic exchange. Yet from this simplicity emerges a remarkable diversity of magnetic states. Some reveal the deep quantum mechanical origins of magnetism, for example, quantum spin liquid (QSL) states in which magnetic moments remain disordered at low temperatures despite being strongly correlated through quantum entanglement. A promising theoretical model of a QSL is the Kitaev model, composed of unusual bond-dependent exchange interactions, but experimentally, this model is challenging to realise. Here we show that the material requirements for the Kitaev QSL survive an extended pseudo-edge-sharing superexchange pathway of Ru3+ octahedra within the honeycomb layers of the inorganic framework solid, RuP3SiO11. We confirm the requisite $${j}_{{\mathsf{eff}}}=\frac{1}{2}$$ j eff = 1 2 state of Ru3+ in RuP3SiO11 and resolve the hierarchy of exchange interactions that provide experimental access to an unexplored region of the Kitaev model.

Suggested Citation

  • Aly H. Abdeldaim & Hlynur Gretarsson & Sarah J. Day & M. Duc Le & Gavin B. G. Stenning & Pascal Manuel & Robin S. Perry & Alexander A. Tsirlin & Gøran J. Nilsen & Lucy Clark, 2024. "Kitaev interactions through extended superexchange pathways in the $${j}_{{\mathsf{eff}}}=1/2$$ j eff = 1 / 2 Ru3+ honeycomb magnet RuP3SiO11," Nature Communications, Nature, vol. 15(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-53900-3
    DOI: 10.1038/s41467-024-53900-3
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    References listed on IDEAS

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