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Bosonic spinons in anisotropic triangular antiferromagnets

Author

Listed:
  • Youngsu Choi

    (Chung-Ang University
    Sungkyunkwan University)

  • Suheon Lee

    (Chung-Ang University)

  • Je-Ho Lee

    (Chung-Ang University)

  • Seungyeol Lee

    (Chung-Ang University)

  • Maeng-Je Seong

    (Chung-Ang University)

  • Kwang-Yong Choi

    (Chung-Ang University
    Sungkyunkwan University)

Abstract

Anisotropic triangular antiferromagnets can host two primary spin excitations, namely, spinons and triplons. Here, we utilize polarization-resolved Raman spectroscopy to assess the statistics and dynamics of spinons in Ca3ReO5Cl2. We observe a magnetic Raman continuum consisting of one- and two-pair spinon-antispinon excitations as well as triplon excitations. The twofold rotational symmetry of the spinon and triplon excitations are distinct from magnons. The strong thermal evolution of spinon scattering is compatible with the bosonic spinon scenario. The quasilinear spinon hardening with decreasing temperature is envisaged as the ordering of one-dimensional topological defects. This discovery will enable a fundamental understanding of novel phenomena induced by lowering spatial dimensionality in quantum spin systems.

Suggested Citation

  • 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.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-26716-8
    DOI: 10.1038/s41467-021-26716-8
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    References listed on IDEAS

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    1. Leon Balents, 2010. "Spin liquids in frustrated magnets," Nature, Nature, vol. 464(7286), pages 199-208, March.
    2. A. Glamazda & P. Lemmens & S. -H. Do & Y. S. Choi & K. -Y. Choi, 2016. "Raman spectroscopic signature of fractionalized excitations in the harmonic-honeycomb iridates β- and γ-Li2IrO3," Nature Communications, Nature, vol. 7(1), pages 1-7, November.
    3. Dirk Wulferding & Youngsu Choi & Seung-Hwan Do & Chan Hyeon Lee & Peter Lemmens & Clément Faugeras & Yann Gallais & Kwang-Yong Choi, 2020. "Magnon bound states versus anyonic Majorana excitations in the Kitaev honeycomb magnet α-RuCl3," Nature Communications, Nature, vol. 11(1), pages 1-7, December.
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    1. 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.

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