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

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

2010-02-09

arxiv.org/abs/1002.1990v1

Phys. Rev. B 80, 184513 (2009)

Physics

Condensed Matter

Superconductivity

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

Scientific paper

10.1103/PhysRevB.80.184513

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.

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