| Issue |
EPL
Volume 90, Number 4, May 2010
|
|
|---|---|---|
| Article Number | 47005 | |
| Number of page(s) | 6 | |
| Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
| DOI | https://doi.org/10.1209/0295-5075/90/47005 | |
| Published online | 18 June 2010 | |
Phonon origin of low-energy and high-energy kinks in high-temperature cuprate superconductors
National Research Nuclear University “MEPhI” - Kashirskoe shosse, 31, Moscow, Russia
Corresponding author: EAMazur@mephi.ru
Received:
6
April
2010
Accepted:
20
May
2010
The Eliashberg theory generalized for the account of the electron-hole nonequivalence and electron correlations in the vertex function is used. The phonon contribution to the nodal electron Green function in a normal state of cuprates is viewed. It is shown that near the optimal doping both the low-energy and high-energy nodal Green function kinks and also the abnormal broadening of a band in cuprates are reproduced with the electron-phonon interaction in the extended Eliashberg theory.
PACS: 74.72.-h – Cuprate superconductors / 74.20.-z – Theories and models of superconducting state / 74.25.Jb – Electronic structure (photoemission, etc.)
© EPLA, 2010
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