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Gap symmetry and charge density excitations in high-Tc superconductors with extended saddle points in electron spectrum

It is shown that the strong anisotropy of the one-particle electron spectrum, due to the presence of extended saddle-point features (ESPF) close to the Fermi level in the hole-type cuprates YBCO and BSCCO, leads to the occurrence of a low-frequency peak in the spectral function of the charge dens...

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Bibliographic Details
Main Authors: Pashitskii, E.A., Pentegov, V.I., Semenov, A.V.
Format: Article
Language:English
Published: Інститут фізики конденсованих систем НАН України 1999
Series:Condensed Matter Physics
Online Access:http://dspace.nbuv.gov.ua/handle/123456789/120526
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