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![]() | Mattis, Daniel C. | Limit model of CuO2 planes: exact results | We solve the simplest tight-binding model of electrons in a CuO2 plane with Coulomb repulsion only on the copper ions, by a limiting procedure which retains all contributions 0(t2/U) while projecting out the higher order terms. In addition to the ground state energy we identify a variety of quasipar... | Electrons; Particle-hole | 1995 |