Strong Influence of Phonons on the Electron Dynamics of Bi2212

Details Strong Influence of Phonons on the Electron Dynamics of Bi2212 Strong Influence of Phonons on the Electron Dynamics of Bi2212

2004-08-22

arxiv.org/abs/cond-mat/0408475v1

J. Phys. Chem. Solids 65, 1397-1401 (2004)

Physics

Condensed Matter

Superconductivity

Scientific paper

10.1016/j.jpcs.2003.12.017

The sudden change of the velocity, so-called "kink," of the dispersing peak in angle resolved photoelectron spectroscopy is a well-known feature in the high temperature superconducting cuprates. Currently, the origin of the kink is being much debated, but a consensus has not emerged yet. Here, we present a study of the momentum evolution of the kink structure from the nodal region towards the anti-nodal region, for optimally doped Bi2212 sample. We show that the observed temperature dependence of the kink structure in both regions of the momentum space is consistent with a scenario in which phonons contribute strongly to the kink.

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