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Dimensional reduction and incommensurate dynamic correlations in the $$S=\frac{1}{2}$$ S = 1 2 triangular-lattice antiferromagnet Ca3ReO5Cl2

Author

Listed:
  • S. A. Zvyagin

    (Dresden High Magnetic Field Laboratory (HLD-EMFL) and Würzburg-Dresden Cluster of Excellence ct.qmat, Helmholtz-Zentrum Dresden-Rossendorf)

  • A. N. Ponomaryov

    (Dresden High Magnetic Field Laboratory (HLD-EMFL) and Würzburg-Dresden Cluster of Excellence ct.qmat, Helmholtz-Zentrum Dresden-Rossendorf
    Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf)

  • J. Wosnitza

    (Dresden High Magnetic Field Laboratory (HLD-EMFL) and Würzburg-Dresden Cluster of Excellence ct.qmat, Helmholtz-Zentrum Dresden-Rossendorf
    TU Dresden)

  • D. Hirai

    (University of Tokyo)

  • Z. Hiroi

    (University of Tokyo)

  • M. Gen

    (University of Tokyo)

  • Y. Kohama

    (University of Tokyo)

  • A. Matsuo

    (University of Tokyo)

  • Y. H. Matsuda

    (University of Tokyo)

  • K. Kindo

    (University of Tokyo)

Abstract

The observation of spinon excitations in the $$S=\frac{1}{2}$$ S = 1 2 triangular antiferromagnet Ca3ReO5Cl2 reveals a quasi-one-dimensional (1D) nature of magnetic correlations, in spite of the nominally 2D magnetic structure. This phenomenon is known as frustration-induced dimensional reduction. Here, we present high-field electron spin resonance spectroscopy and magnetization studies of Ca3ReO5Cl2, allowing us not only to refine spin-Hamiltonian parameters, but also to investigate peculiarities of its low-energy spin dynamics. We argue that the presence of the uniform Dzyaloshinskii-Moriya interaction (DMI) shifts the spinon continuum in momentum space and, as a result, opens a zero-field gap at the Γ point. We observed this gap directly. The shift is found to be consistent with the structural modulation in the ordered state, suggesting this material as a perfect model triangular-lattice system, where a pure DMI-spiral ground state can be realized.

Suggested Citation

  • S. A. Zvyagin & A. N. Ponomaryov & J. Wosnitza & D. Hirai & Z. Hiroi & M. Gen & Y. Kohama & A. Matsuo & Y. H. Matsuda & K. Kindo, 2022. "Dimensional reduction and incommensurate dynamic correlations in the $$S=\frac{1}{2}$$ S = 1 2 triangular-lattice antiferromagnet Ca3ReO5Cl2," Nature Communications, Nature, vol. 13(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-33992-5
    DOI: 10.1038/s41467-022-33992-5
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    References listed on IDEAS

    as
    1. Leon Balents, 2010. "Spin liquids in frustrated magnets," Nature, Nature, vol. 464(7286), pages 199-208, March.
    2. Youngsu Choi & Suheon Lee & Je-Ho Lee & Seungyeol Lee & Maeng-Je Seong & Kwang-Yong Choi, 2021. "Bosonic spinons in anisotropic triangular antiferromagnets," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
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