High temperature superconductivity due to the long-range electron-phonon interaction, application to isotope effects, thermomagnetic transport and nanoscale heterogeneity in cuprates

Abstract

Strong electron-phonon interactions in cuprates and other high-temperature superconductors have gathered support over the last decade in a large number of experiments. Here I briefly introduce the Froehlich-Coulomb multi-polaron model of high-temperature superconductivity, which includes strong on-site repulsive correlations and the long-range Coulomb and electron-phonon (e-ph) interactions. Our extension of the BCS theory to the strong-coupling regime with the long-range \emph{unscreened} electron-phonon interaction could naturally explain the isotope effects, unconventional thermomagnetic transport, and checkerboard modulations of the tunnelling density of states in cuprates.

11 pages, 4 figures, invited paper at the International Conference 'Stripes-04' (Rome, Italy, 26 Sept- 2 Oct, 2004), more Nernst data are discussed

References in corpus (4)

• Local Ordering in the Pseudogap State of the High-T${}_c$ Superconductor Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$
• An unusual isotope effect in a high-transition-temperature superconductor
• Nernst effect in poor conductors and the cuprate superconductors
• Isotope effect on the electron band structure of doped insulators

Cited by in corpus (2)

• Structural matters in HTSC; the origin and form of stripe organization and checker boarding
• On the interband pairing in doped graphane