Mechanisms of High-Order Perturbative Photoemission from Cu(001)

F. Bisio, M. Nývlt, J. Franta, H. Petek, and J. Kirschner
Phys. Rev. Lett. 96, 087601 – Published 27 February 2006

Abstract

We observed high-order 2- to 4-photon photoemission and above threshold photoemission (ATP) processes with 3.07 eV light from the Cu(001) surface. The intensity of 3-photon photoemission via excitation through the n=1 image potential state significantly exceeded that of the 2-photon process. The ATP occurs either via single photon transitions from the image potential resonances above the vacuum level or by multiphoton transitions from image potential states below the vacuum level. The experimental ratio of the m- to (m+1)-photon process yields is sensitive to the electronic band structure of the solid.

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  • Received 1 July 2005

DOI:https://doi.org/10.1103/PhysRevLett.96.087601

©2006 American Physical Society

Authors & Affiliations

F. Bisio1,2, M. Nývlt1,3,*, J. Franta1,3, H. Petek4, and J. Kirschner1

  • 1Max-Planck Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle (Saale), Germany
  • 2CNR-INFM, Unità di Genova, via Dodecaneso 33, I-16146 Genova, Italy
  • 3Faculty of Mathematics and Physics, Institute of Physics, Charles University, Ke Karlovu 5, CZ-12116 Praha 2, Czech Republic
  • 4Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA

  • *Electronic address: nyvlt@karlov.mff.cuni.cz

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Vol. 96, Iss. 8 — 3 March 2006

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