Resonant coherent three-photon photoemission from Cu(001)

Aimo Winkelmann, Wen Chin Lin, Cheng Tien Chiang, Francesco Bisio, Hrvoje Petek, Jürgen Kirschner

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

We demonstrate the contribution of coherent excitation pathways in three-photon photoemission from Cu(001). We identify separate peaks in the photoelectron spectra as originating from two specific Cud bands that are excited at different k points via the same unoccupied image-potential state. By model calculations we show that our experimental observations impose lower limits on the relevant Cud -hole dephasing time on the order of 10-20 fs. Our findings suggest extensions to future studies in electronic structure mapping with tunable laboratory and free-electron laser sources, exploiting possible multiphoton resonances between occupied bulk and unoccupied surface states.

Original languageEnglish
Article number155128
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume80
Issue number15
DOIs
Publication statusPublished - 2009 Oct 20

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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