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arXiv · 0704.0093

Aspects of Electron-Phonon Self-Energy Revealed from Angle-Resolved Photoemission Spectroscopy

W. S. Lee·S. Johnston·T. P. Devereaux·Z. -X. Shen
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Abstract

Lattice contribution to the electronic self-energy in complex correlated oxides is a fascinating subject that has lately stimulated lively discussions. Expectations of electron-phonon self-energy effects for simpler materials, such as Pd and Al, have resulted in several misconceptions in strongly correlated oxides. Here we analyze a number of arguments claiming that phonons cannot be the origin of certain self-energy effects seen in high-$T_c$ cuprate superconductors via angle resolved photoemission experiments (ARPES), including the temperature dependence, doping dependence of the renormalization effects, the inter-band scattering in the bilayer systems, and impurity substitution. We show that in light of experimental evidences and detailed simulations, these arguments are not well founded.

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W. S. Lee, S. Johnston, T. P. Devereaux, Z. -X. Shen. 2007-04-01. Aspects of Electron-Phonon Self-Energy Revealed from Angle-Resolved Photoemission Spectroscopy. https://doi.org/10.1103/physrevb.75.195116

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