Surface core-level shift of lead sulfide
- 15 February 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 41 (6), 3851-3853
- https://doi.org/10.1103/physrevb.41.3851
Abstract
The results of a photoemission study of the surface core-level shift of the Pb 5d level in the semiconductor PbS are reported. We found no surface shift within an experimental error of ±0.1 eV. Since this compound is highly ionic, this result is inconsistent with the theory that ionicity determines surface core-level shifts. However, the shift may be used to show that the heat of segregation of Bi in PbS is zero.Keywords
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