Generalized Hatsugai-Kohmoto models support ferromagnetism, p- and d-wave bond-ordered magnets, and non-degenerate singlet states with retained spin splitting when local interactions are added.
Let us consider the following Coulomb-like interaction ∆H= 1 N X k,k′,q,σ,σ′ Vq :c † k+q,σ ck,σc† k′−q,σ ′ck′,σ′ :,(B3) 9 where: ˆA:denotes normal ordering
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Hatsugai-Kohmoto-like Models for Altermagnets and Odd-Parity Magnets
Generalized Hatsugai-Kohmoto models support ferromagnetism, p- and d-wave bond-ordered magnets, and non-degenerate singlet states with retained spin splitting when local interactions are added.