Coupling of Low Energy Electrons in Optimally Doped Bi2212 to an Optical Phonon Mode

Abstract

Laser based photoemission with photons of energy 6 eV is used to examine the fine details of the very low energy electron dispersion and associated dynamics in the nodal region of optimally doped Bi2212. A "kink" in the dispersion in the immediate vicinity of the Fermi energy is associated with scattering from an optical phonon previously identified in Raman studies. The identification of this phonon as the appropriate mode is confirmed by comparing the scattering rates observed experimentally with the results of calculated scattering rates based on the properties of the phonon mode.

14 Pages, 7 Figures Submitted to PRB March 14, 2009 Published in PRB September 23, 2009: PRB 80, 184513

References in corpus (5)

• Momentum dependence of the superconducting gap in Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$
• Laser ARPES, the sudden approximation, and quasiparticle-like peaks in Bi2Sr2CaCu2O8+delta
• High-energy kink in high-temperature superconductors
• Optical conductivity and the correlation strength of high temperature copper-oxide superconductors
• An Isotopic Fingerprint of Electron-Phonon Coupling in High-Tc Cuprates

Cited by in corpus (3)

• Dirac materials
• Ultrafast Angle-Resolved Photoemission Spectroscopy of Quantum Materials
• Intermediate Coupling Model of the Cuprates