Publication
Solid State Communications
Paper

Observation of opposite 4f-surface core level binding energy shifts for W(111) and Ta(111)

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Abstract

Surface 4f core level binding energy shifts have been measured in photoemission from W(111) and Ta(111). The surface shift was found to change sign across the row of 5d-metals: for the topmost layer of Ta(111) a +0.40 eV shift toward higher binding energy is found, whereas for W(111) the shift is -0.43 eV toward lower binding energy. The shifts are shown to be dependent on surface crystallography. Chemical shifts are determined for saturation coverage of hydrogen. © 1981.

Date

01 Jan 1981

Publication

Solid State Communications

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