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arXiv · 1606.06619

Dispersion and lineshape of plasmon satellites in one, two and three dimensions

Derek Vigil-Fower·Steven G. Louie·Johannes Lischner
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Abstract

Using state-of-the-art many-body Green's function calculations based on the "GW plus cumulant" approach, we analyze the properties of plasmon satellites in the electron spectral function resulting from electron-plasmon interactions in one-, two- and three-dimensional systems. Specifically, we show how their dispersion relation, lineshape and linewidth are related to the properties of the constituent electrons and plasmons. To gain insight into the many-body processes giving rise to the formation of plasmon satellites, we connect the "GW plus cumulant" approach to a many-body wavefunction picture of electron-plasmon interactions and introduce the coupling-strength weighted electron-plasmon joint-density states as a powerful concept for understanding plasmon satellites.

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Derek Vigil-Fower, Steven G. Louie, Johannes Lischner. 2016-06-21. Dispersion and lineshape of plasmon satellites in one, two and three dimensions. https://doi.org/10.1103/physrevb.93.235446

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