Plasmaron excitations in p(2x2)-K/Graphite
| Autor: | Chis, V., Silkin, V. M., Hellsing, B. |
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| Rok vydání: | 2014 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevB.89.205429 |
| Popis: | 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. Comment: 6 pages, 6 figures, submittet to Physical Review B |
| Databáze: | arXiv |
| Externí odkaz: |
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