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arxiv: 2508.18372 · v1 · pith:VT7REIAW · submitted 2025-08-25 · cond-mat.str-el · cond-mat.mes-hall· cond-mat.mtrl-sci· cond-mat.other

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

Manoj Gupta , Arijit Haldar , Subhro Bhattacharjee , Tanusri Saha-Dasgupta This is my paper

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classification cond-mat.str-el cond-mat.mes-hallcond-mat.mtrl-scicond-mat.other
keywords diracspin-orbitalhoneycombhoppinglatticeliquidsmultipleab-initio-calculation-inspired
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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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