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Title: Electron pair emission detected by time-of-flight spectrometers: Recent progress

We present results for electron coincidence spectroscopy using two time-of-flight (ToF) spectrometers. Excited by electron impact, the energy and momentum distribution of electron pairs emitted from the Cu(111) surface are resolved and a spectral feature related to the Shockley surface state is identified. By combining the two ToF spectrometers with a high-order harmonic generation light source, we demonstrate double photoemission spectroscopy in the laboratory that required synchrotron radiation in the past. Utilizing this setup, we report results for (γ,2e) on NiO(001) on Ag(001) excited with light at 30 eV photon energy.
Authors:
;  [1] ; ; ;  [1] ;  [2] ;  [3] ;  [4]
  1. Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle (Germany)
  2. (Saale) (Germany)
  3. Institute of Physics, Martin-Luther-Universität Halle-Wittenberg, Von-Danckelmann-Platz 3, D-06120 Halle (Saale) (Germany)
  4. (Germany)
Publication Date:
OSTI Identifier:
22283169
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 6; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COINCIDENCE SPECTROMETRY; COPPER; CRYSTAL STRUCTURE; ELECTRON PAIRS; ELECTRONS; EMISSION SPECTROSCOPY; HARMONIC GENERATION; LIGHT SOURCES; NICKEL OXIDES; PHOTOEMISSION; PHOTONS; SURFACES; SYNCHROTRON RADIATION; TIME-OF-FLIGHT METHOD; TIME-OF-FLIGHT SPECTROMETERS; VISIBLE RADIATION