Electron-Energy-Loss Spectroscopy of Semiconducting SmS(100): Evidence for a Surface Phase Transition
- 19 January 1976
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 36 (3) , 148-151
- https://doi.org/10.1103/physrevlett.36.148
Abstract
The presence of trivalent Sm has been observed near the (100) surface of pure semiconducting SmS using electron-energy-loss spectroscopy with 100-eV electrons. This surface phase transition is interpreted as due to differential contraction of the surface cation lattice constant for NaCl-type (100) surfaces and helps to resolve reported differences in ultraviolet and x-ray photoemission experiments on SmS.Keywords
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