Monolayer CoBr2 shows dominant t2g-eg hopping that strengthens ferromagnetic Kitaev interactions, leading to a J1-J3 phase diagram with ferromagnetic, stripy, spiral, 120-degree antiferromagnetic, Z2 vortex crystal, and bond-nematic phases.
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Spin-orbit driven $J_{eff} = 1/2$ magnetism in a d$^7$ triangular-lattice monolayer cobaltate
Monolayer CoBr2 shows dominant t2g-eg hopping that strengthens ferromagnetic Kitaev interactions, leading to a J1-J3 phase diagram with ferromagnetic, stripy, spiral, 120-degree antiferromagnetic, Z2 vortex crystal, and bond-nematic phases.