Effective t-J Hamiltonian for the Copper Oxides
J. J. Rodriguez-Nunez, Hans Beck
Abstract
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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