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    Topological and Trivial Valence-Bond Orders in Higher-Spin Kitaev Models

    Xing-Yu Zhang1,*, Qi Yang2,*, Philippe Corboz2, Jutho Haegeman1, and Yuchi He1,3,†

    • 1Department of Physics and Astronomy, Ghent University, Krijgslaan 281, 9000 Gent, Belgium
    • 2Institute for Theoretical Physics Amsterdam and Delta Institute for Theoretical Physics, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
    • 3Rudolf Peierls Centre for Theoretical Physics, Clarendon Laboratory, Parks Road, Oxford OX1 3PU, United Kingdom

    • *These authors contributed equally to this work.
    • †Contact author: yuchi.he@ugent.be

    Phys. Rev. Lett. 137, 176502 – Published 20 October, 2026

    DOI: https://doi.org/10.1103/7q31-xxsd

    Abstract

    We investigate the quantum phases of higher-spin Kitaev models using tensor network methods. Our results reveal distinct valence-bond-ordered phases for spin-1, spin-32, and spin-2 models. In all cases, we find translational symmetry breaking with unit cells being tripled by forming valence-bond orders. However, these three phases are distinct, forming plaquette order, topological dimer order, and nontopological dimer order, respectively. Our findings are based on a cross-validation between variational two-dimensional tensor network calculations: an unrestricted exploration of symmetry-broken states versus the detection of symmetry breaking from cat-state behavior in symmetry-restricted states. The origin of different orders can also be understood from a theoretical analysis. Our Letter sheds light upon the interplay between topological and symmetry-breaking orders as well as their detection via tensor networks.

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