Search for superconductivity in an extended Hubbard model
S. N. Coppersmith
DOI 10.1103/PhysRevB.39.9671 · Physical Review B
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Abstract
Extensions of the Gutzwiller variational method are used to study whether substantial nearest-neighbor repulsion between holes on a copper-oxygen lattice in two dimensions leads to simple s-wave superconductivity. It is found that the simplest one-parameter s-wave superconducting wave functions do not lower the energy with respect to the normal state.
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