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Restricted screening and non-adiabatic electron-phonon coupling in high-Tc oxides

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Published in Physics Letters. A. 1992, vol. 164, no. 3-4, p. 345-348
Abstract The two-dimensional structure of typical high-Tc oxides leads to weak screening of phonons which involve z-displacements and have energy larger than the electronic kz-dispersion. Frozen phonon calculations in which the screening is restricted show qualitatively the tendency for very large electron-phonon coupling of such modes. Models of non-adiabatic coupling suggest stable conditions for charge fluctuations and gaps from pairwise interactions of electronic states.
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JARLBORG, Thomas N. Restricted screening and non-adiabatic electron-phonon coupling in high-Tc oxides. In: Physics Letters. A, 1992, vol. 164, n° 3-4, p. 345-348. https://archive-ouverte.unige.ch/unige:98904

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Deposited on : 2017-11-13

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