On the extraction of the self-energy from angle-resolved photoemission spectroscopy

Details On the extraction of the self-energy from angle-resolved photoemission spectroscopy On the extraction of the self-energy from angle-resolved photoemission spectroscopy

Apr 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005njph....7...98k&link_type=abstract

New Journal of Physics, Volume 7, Issue 1, pp. 98 (2005).

Physics

11

Scientific paper

We examine a technique commonly used to extract the self-energy from angle-resolved photoemission spectroscopy data. We find that this technique works extremely well for the marginal Fermi liquid model where it follows the analytical model perfectly. Surprisingly, we find a similarly good performance in the case of a Fermi liquid. Finally, we test the influence of the energy and momentum resolution on the results. We find that while the momentum resolution plays only a minor role in the analysis (it slightly inflates the values of the imaginary part of the self-energy), the energy resolution changes the extracted functional form of the self-energy in a significant way at low binding energy.

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