A weak-coupling limit of the d - d excit
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A.L. Shelankov; X. Zotos; W. Weber
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Article
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1988
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Elsevier Science
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English
β 138 KB
An effective Hamiltonian is developed for the d-d excitation model in the atomic limit. In a weak coupling approximation it is shown that the interaction between itinerant oxygen p holes mediated by virtual d -d excitations of Cu ++ may lead to superconductivity of purely electronic origin.