Insight on the interaction between image potential state and π bands in graphite

Stefania Pagliara, Gabriele Ferrini, Matteo Montagnese, Stefano Dal Conte, Gianluca Galimberti, Fulvio Parmigiani

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

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.
Original languageEnglish
Pages (from-to)045427-045432
Number of pages6
JournalPHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS
Volume87
DOIs
Publication statusPublished - 2013

Keywords

  • graphite
  • surface state

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