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arXiv · 2508.18372

Multiple Dirac Spin-Orbital Liquids in SU(4) Heisenberg Antiferromagnets on the Honeycomb Lattice

Manoj Gupta·Arijit Haldar·Subhro Bhattacharjee·Tanusri Saha-Dasgupta
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Abstract

We study the strong coupling model of $d^1$ transition metal tri-halides in the large spin-orbit coupled limit. By considering ab-initio-calculation-inspired hierarchy of hopping pathways of these compounds, SU(4) symmetry is found to emerge at multiple points in the parameter space of the hopping parameters. The resultant Dirac spin-orbital liquids, within the parton mean field description, are distinct. The calculated dynamical structure factor fingerprints this distinctive nature, giving rise to observable effects. This opens up a playground for SU(4) Dirac Spin-Orbital liquid in $d^1$ Honeycomb lattice systems.

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Manoj Gupta, Arijit Haldar, Subhro Bhattacharjee, Tanusri Saha-Dasgupta. 2025-08-25. Multiple Dirac Spin-Orbital Liquids in SU(4) Heisenberg Antiferromagnets on the Honeycomb Lattice. https://arxiv.org/abs/2508.18372

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