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Optica Publishing Group
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1996),
  • paper QPD1

Wavepacket Excitation and Ultrafast Dynamics of Surface Rydberg States on Cu(100)

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An electron in front of a metal surface experiences the long-range image force. In the Coulomb-like potential an infinite series of bound hydrogenic states with binding energies En ≃ −0.85 eV/n2 can exist for many low-index surfaces. These image potential states have been observed by inverse photoelectron spectroscopy and two-photon photoelectron spectroscopy (2PPE) [1]. Their decay is governed by the creation of electron-hole pairs in the metal. Experimental values for the lifetime of the states deduced previously range from ~ 5 fs for the n= 1 state of Fe(110) to ~ 180 fs for the n = 2 state of Ag(100) [1–3].

© 1996 Optical Society of America

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