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High temperature superconductivity and charge segregation in a model with strong long-range electron-phonon and Coulomb interactions

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journal contribution
posted on 03.04.2006 by A.S. Alexandrov, P.E. Kornilovitch
An analytical method of studying strong long-range electron–phonon and Coulomb interactions in complex lattices is presented. The method is applied to a perovskite layer with anisotropic coupling of holes to the vibrations of apical atoms. Depending on the relative strength of the polaronic shift Ep and the inter-site Coulomb repulsion Vc, the system is either a polaronic Fermi liquid, Vc>1.23Ep, a bipolaronic superconductor, 1.16Ep

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ALEXANDROV, A.S. and KORNILOVITCH, P.E., 2002. High-temperature superconductivity and charge segregation in a model with strong long-range electron–phonon and Coulomb interactions. Physics Letters A, 299, (5–6), pp. 650–655.

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2001

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This article was submitted for publication in the journal, Physics Letters A [© Elsevier] and the definitive version is available at: http://dx.doi.org/10.1016/S0375-9601(02)00684-9

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