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arXiv · 1403.2500

Plasmaron excitations in p(2x2)-K/Graphite

V. Chis·V. M. Silkin·B. Hellsing
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Abstract

A new type of plasmarons formed by the compound of photoelectrons and acoustic surface plasmon excitations is investigated in the system p(2x2)-K/Graphite. The physics behind these types of plasmarons, e-plasmarons, is different from the ones recently found in graphene where the loss feature is argued to result from the photohole-plasmon interaction, h-plasmarons. Based on first principles methods we calculate the dispersion of e-plasmaron excitation rate which yields a broad feature below the parabolic quantum-well band with a peak about 0.4 eV below the quantum well band in the Gamma-point.

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V. Chis, V. M. Silkin, B. Hellsing. 2014-03-11. Plasmaron excitations in p(2x2)-K/Graphite. https://doi.org/10.1103/physrevb.89.205429

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