Abstract
We demonstrate that the electron density of the light-populated image potential states in graphite reaches its maximum when the photon energy of ultrashort laser pulses is resonant with the π−π* band gap at the M point of the Brillouin zone. This unexpected behavior, as shown by the nonlinear photoelectron spectroscopy data, is assisted by the onset of a strong light-induced interaction between the π bands and the image potential states. This finding suggests the possibility of exploring new photochemical processes at the graphite surface and related compounds.
Lingua originale | English |
---|---|
pagine (da-a) | 045427-045432 |
Numero di pagine | 6 |
Rivista | PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS |
Volume | 87 |
DOI | |
Stato di pubblicazione | Pubblicato - 2013 |
Keywords
- graphite
- surface state