TY - JOUR
A2 - Alexandrov, Sasha
AU - Bouvier, Jacqueline
AU - Bok, Julien
PY - 2010
DA - 2010/03/07
TI - Electron-Phonon Interaction in the High- Cuprates in the Framework of the Van Hove Scenario
SP - 472636
VL - 2010
AB - Electron-lattice interaction was the original idea of Müller and Berdnorz who chose copper oxides, because of the strong Jahn-Teller effect of the Cu ion leading to the formation of bipolarons. Later several experimental features led to theoretical models based on strong electronic correlations. The high-TC superconductors cuprates are quasi-bidimensional (2D) and thus lead to the existence of Van Hove singularities (VHs) in the band structure, that is, a peak in the electronic density of states. The presence of VHs near the Fermi-level in the cuprates is now well established. In this context we show that many physical properties of these materials can be explained using electron-phonon interaction, in particular the high critical temperature TC, the anomalous isotope effect, the superconducting gap and its anisotropy, and the marginal Fermi-liquid properties. These compounds present a topological transition for a critical hole doping p≈0.21 hole per CuO2 plane.
SN - 1687-8108
UR - https://doi.org/10.1155/2010/472636
DO - 10.1155/2010/472636
JF - Advances in Condensed Matter Physics
PB - Hindawi Publishing Corporation
KW -
ER -