Field-Ion Spectroscopy of Electronic States at Clean and Adsorbate-Covered Tungsten Surfaces
- 18 November 1974
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 33 (21), 1294-1297
- https://doi.org/10.1103/physrevlett.33.1294
Abstract
Measurements are reported of the kinetic energy distributions of field-ionized noble gases on both clean and nitrogen-adsorbate-covered surfaces of tungsten. The structure observed is attributed to the energy distribution of unoccupied electronic states at the metal surface. Correspondences are found with recent calculations of one-dimensional densities of states. A nitrogen-adsorption peak is observed at 0.6 eV above the Fermi energy.Keywords
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