Effective t-J Hamiltonian for the Copper Oxides
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❄️ cond-mat
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coppereffectivehamiltonianmatrixoxygenableassumedbeen
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Starting from the Emery model, which is assumed to describe the copper oxygen planes, and including direct oxygen hopping matrix elements, we have been able to derive the effective t-J Hamiltonian for the copper orbitals using the Linked Cluster Expansion Method up to fourth order in the hybridization matrix element.
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