Elusive electron-phonon coupling in quantitative analyses of the spectral function

  title={Elusive electron-phonon coupling in quantitative analyses of the spectral function},
  author={Christian Neil Veenstra and Glen L. Goodvin and Mona Berciu and Andrea Damascelli},
  journal={Physical Review B},
We examine multiple techniques for extracting information from angle-resolved photoemission spectroscopy (ARPES) data, and test them against simulated spectral functions for electron-phonon coupling. We find that, in the low-coupling regime, it is possible to extract self-energy and bare-band parameters through a self-consistent Kramers-Kronig bare-band fitting routine. We also show that the effective coupling parameters deduced from the renormalization of quasiparticle mass, velocity, and… 

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  • V. Dolgov, arXiv:1001.4859
  • 2010
  • Rev. Lett. 99, 146404
  • 2007
  • Rev. B 76, 165109
  • 2007
  • Rev. Lett. 97, 036402
  • 2006
New J
  • Phys. 7, 98
  • 2005
  • Rev. B 69, 144509
  • 2004
Physica Scripta T109
  • 61
  • 2004
  • Rev. B 59, 9923
  • 1999
Sawatzky for many useful discussions. This work was supported by
  • strength of the underlying interactions, at least in the momentum independent, low-coupling regime. We gratefully acknowledge S