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On the local approximation of the electron–photon interaction self-energy

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Abstract

We investigate the impact of the so-called local, i.e., diagonal, approximation for the electron–photon scattering self-energy, within the nonequilibrium Green’s function formalism. We report on three different systems to show that the local approximation may dramatically degrade expected selection rules, but that this degradation has minor impacts on the physical properties of realistic systems in which other scattering processes are assumed.

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Acknowledgments

The financial support of the project ANR-14-CE26-0020-01 ‘Platofil’ is gratefully acknowledged.

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Authors and Affiliations

  1. Aix-Marseille Université, CNRS, Université de Toulon, IM2NP UMR 7334, Marseille, France

    Nicolas Cavassilas, Fabienne Michelini & Marc Bescond

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  1. Nicolas Cavassilas
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  2. Fabienne Michelini
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  3. Marc Bescond
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Correspondence to Nicolas Cavassilas.

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Cavassilas, N., Michelini, F. & Bescond, M. On the local approximation of the electron–photon interaction self-energy. J Comput Electron 15, 1233–1239 (2016). https://doi.org/10.1007/s10825-016-0883-5

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  • DOI: https://doi.org/10.1007/s10825-016-0883-5

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