Photoemission Observation of a Surface State of Tungsten
作者： B. J. Waclawski , E. W. Plummer
DOI: 10.1103/PHYSREVLETT.29.783
关键词:
摘要: Photoelectron energy distributions from clean, polycrystalline tungsten reveal a surface-sensitive peak about 0.4 eV below the Fermi energy. This peak, which is identified as surface state, rapidly decays during gas adsorption, and concomitant growth of new at \ensuremath{\sim}2.5 observed. Over range surface-state strength emission relative to bulk decreases with increasing photon These results quantitatively substantiate existing field-emission data qualitatively agree model photoemission calculations.
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