NDLI: Phonon Origin of High T $_{ c }$ in Superconducting Cuprates

Content Provider	Springer Nature Link
Author	Mazur, E. A. Kagan, Y.
Copyright Year	2012
Abstract	Eliashberg theory (ET), generalized for the account of the peculiar properties of the finite zone width electron-phonon (EP) systems with the non-constant electron density of states, the electron-hole nonequivalence, chemical potential renormalization with doping and frequency, and electron correlations in the vertex function, is used for the study of T $_{ c }$ in cuprates. The phonon contribution to the nodal anomalous electron Green function (GF) in cuprates is considered. The pairing on the full width of the electron zone was taken into account, not just on the Fermi surface. It is found that the finite zone width phenomenon in the newly derived Eliashberg equations for the finite zone width EP system together with the abrupt fall of the density of states above the Fermi surface are the crucial factors for the appearance of the high temperature superconductivity phenomenon. It is shown that near the optimal doping in the hole-doped cuprates high T $_{ c }$ value is reproduced with the EP interaction constant obtained from tunnel experiments.
Starting Page	1163
Ending Page	1166
Page Count	4
File Format	PDF
ISSN	15571939
Journal	Journal of Superconductivity and Novel Magnetism
Volume Number	26
Issue Number	4
e-ISSN	15571947
Language	English
Publisher	Springer US
Publisher Date	2012-12-29
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Electron-phonon interaction Cuprates Eliashberg theory Tunneling Strongly Correlated Systems, Superconductivity Magnetism, Magnetic Materials Condensed Matter Physics Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Condensed Matter Physics

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