A mixed-spin Kitaev honeycomb model with alternating spin-1/2 and spin-3/2 ions hosts four quadrupolar-distinguished quantum spin liquid phases, confirmed by parton mean-field theory and DMRG, with Zr0.5Ru0.5Cl3 proposed as a candidate material.
There are multiple representations of the superexchange Hamiltonian, as various orthogonal spin matrices can be employed to describe the spin-3/2 degrees of freedom
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Ferrimagnetic Kitaev spin liquids in mixed spin 1/2 spin 3/2 honeycomb magnets
A mixed-spin Kitaev honeycomb model with alternating spin-1/2 and spin-3/2 ions hosts four quadrupolar-distinguished quantum spin liquid phases, confirmed by parton mean-field theory and DMRG, with Zr0.5Ru0.5Cl3 proposed as a candidate material.