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From t–J to JT: Spin-Charge-Phonon-Coupling in High Temperature Superconductors

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Abstract

Superconducting copper-oxides are modeled by a two-band Hubbard type modelHamiltonian which explicitly includes on-site and intersiteelectron–phonon interactions. The effects of both on theantiferromagnetic and superconducting state properties are investigated. Inthe antiferromagnetic regime the on-site electron–phonon interactionsinduce a squeezing of the band energies and an isotope effect on theantiferromagnetic transition temperature T N is predicted. In thesuperconducting phase the intersite electron–phonon couplings gainimportance and induce a large increase in T c especially if the difference inband energies is large.

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Authors and Affiliations

  1. Max-Planck-Institut f¨r Festkoerperforschung, Heisenbergstr. 1, D-70569, Stuttgart, Germany

    Annette Bussmann-Holder

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  1. Annette Bussmann-Holder
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Bussmann-Holder, A. From t–J to JT: Spin-Charge-Phonon-Coupling in High Temperature Superconductors. Journal of Superconductivity 12, 19–21 (1999). https://doi.org/10.1023/A:1007748931231

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  • DOI: https://doi.org/10.1023/A:1007748931231

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