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Emergent order in the kagome Ising magnet Dy3Mg2Sb3O14

Author

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  • Joseph A. M. Paddison

    (Cavendish Laboratory, University of Cambridge
    School of Physics, Georgia Institute of Technology)

  • Harapan S. Ong

    (Cavendish Laboratory, University of Cambridge)

  • James O. Hamp

    (Cavendish Laboratory, University of Cambridge)

  • Paromita Mukherjee

    (Cavendish Laboratory, University of Cambridge)

  • Xiaojian Bai

    (School of Physics, Georgia Institute of Technology)

  • Matthew G. Tucker

    (ISIS Neutron and Muon Source, Rutherford Appleton Laboratory
    Spallation Neutron Source, Oak Ridge National Laboratory)

  • Nicholas P. Butch

    (NIST Center for Neutron Research, National Institute of Standards and Technology)

  • Claudio Castelnovo

    (Cavendish Laboratory, University of Cambridge)

  • Martin Mourigal

    (School of Physics, Georgia Institute of Technology)

  • S. E. Dutton

    (Cavendish Laboratory, University of Cambridge)

Abstract

The Ising model—in which degrees of freedom (spins) are binary valued (up/down)—is a cornerstone of statistical physics that shows rich behaviour when spins occupy a highly frustrated lattice such as kagome. Here we show that the layered Ising magnet Dy3Mg2Sb3O14 hosts an emergent order predicted theoretically for individual kagome layers of in-plane Ising spins. Neutron-scattering and bulk thermomagnetic measurements reveal a phase transition at ∼0.3 K from a disordered spin-ice-like regime to an emergent charge ordered state, in which emergent magnetic charge degrees of freedom exhibit three-dimensional order while spins remain partially disordered. Monte Carlo simulations show that an interplay of inter-layer interactions, spin canting and chemical disorder stabilizes this state. Our results establish Dy3Mg2Sb3O14 as a tuneable system to study interacting emergent charges arising from kagome Ising frustration.

Suggested Citation

  • Joseph A. M. Paddison & Harapan S. Ong & James O. Hamp & Paromita Mukherjee & Xiaojian Bai & Matthew G. Tucker & Nicholas P. Butch & Claudio Castelnovo & Martin Mourigal & S. E. Dutton, 2016. "Emergent order in the kagome Ising magnet Dy3Mg2Sb3O14," Nature Communications, Nature, vol. 7(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms13842
    DOI: 10.1038/ncomms13842
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