Symmetry-induced long-lived excited state in Au6

Michael Walter, Hannu Häkkinen, J. Stanzel, M. Neeb, and W. Eberhardt
Phys. Rev. B 76, 155422 – Published 22 October 2007

Abstract

We present time-resolved photoelectron spectra in combination with quantum chemical calculations based on time-dependent density functional theory for the study of the long-lived excited state of Au6. The experimental spectra indicate an excited state lifetime of at least 90ns. It is shown that the orbital symmetry of the photoexcited state as well as the planarity of Au6 are responsible for the unusual long lifetime. A possible decay mechanism is the fluorescence of a photon which is estimated to take place on a time scale of 730ns.

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  • Received 24 May 2007

DOI:https://doi.org/10.1103/PhysRevB.76.155422

©2007 American Physical Society

Authors & Affiliations

Michael Walter1 and Hannu Häkkinen1,2

  • 1Department of Physics, Nanoscience Center, University of Jyväskylä, Jyväskylä FIN-40014, Finland
  • 2Department of Chemistry, Nanoscience Center, University of Jyväskylä, Jyväskylä FIN-40014, Finland

J. Stanzel, M. Neeb, and W. Eberhardt

  • BESSY GmbH, Albert-Einstein-Str. 15, 12489 Berlin, Germany

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Issue

Vol. 76, Iss. 15 — 15 October 2007

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