Phonon origin of low energy and high energy kinks in high temperature cuprate superconductors

Abstract

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 cuprates is viewed. At non- zero temperatures the singularities (kinks) in the frequency behavior of a real and imaginary part of an electron nodal Green function, and also in the nodal part of the density of the electron states modified by an electron-phonon interaction are studied. 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.

11 pages, 3 figures

References in corpus (19)

• A universal high energy anomaly in angle resolved photoemission spectra of high temperature superconductors - possible evidence of spinon and holon branches
• High-energy kink in high-temperature superconductors
• The hierarchy of multiple many-body interaction scales in high-temperature superconductors
• Resonance in the electron-doped high-Tc superconductor Pr0.88LaCe0.12CuO(4-delta)
• High-energy scale revival and giant kink in the dispersion of a cuprate superconductor
• "Waterfalls" phenomenon in superconducting cuprates
• "Waterfalls" in cuprates
• Interplay between electron-phonon and Coulomb interactions in cuprates
• An Isotopic Fingerprint of Electron-Phonon Coupling in High-Tc Cuprates
• Identification of a New Form of Electron Coupling in Bi2Sr2CaCu2O8 Superconductor by Laser-Based Angle-Resolved Photoemission
• Direct extraction of the Eliashberg function for electron-phonon coupling: A case study of Be(1010)
• Photoemission kinks and phonons in cuprates
• Momentum dependence of the electron-phonon coupling and self-energy effects in YBa_2Cu_3O_7 within the local density approximation
• Angle-resolved photoemission spectroscopy of electron-doped cuprate superconductors: Isotropic electron-phonon coupling
• Temperature dependence of the angle resolved photoemission spectra in the undoped cuprates: self-consistent approach to the t-J-Holstein model
• Finite band inversion of ARPES in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ in comparison with optics
• Differences in the high-energy kink between hole- and electron-doped high-$T_{\mathrm{c}}$ superconductors
• Characteristics of oxygen isotope substitutions in the quasiparticle spectrum of Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$
• Life of the nodal quasiparticles in Bi-2212 as seen by ARPES

Cited by in corpus (4)

• Polaronic metal in lightly doped high-Tc cuprates
• Local correlations necessitate waterfalls as a connection between quasiparticle band and developing Hubbard bands
• Normal State of the Metallic Hydrogen Sulfide
• Effect of short-range correlations on spectral properties of doped Mott insulators