Core Level Analysis of the Surface Charge Density Wave Transition in Sn/Ge(111)
- 4 October 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 83 (14) , 2789-2792
- https://doi.org/10.1103/physrevlett.83.2789
Abstract
Photoemission from the surface charge density wave (CDW) system Sn/Ge(111) yields a surprisingly broad Sn core level line shape at room temperature. Our study shows that it consists of three components, one associated with the normal phase and the other two associated with the CDW phase. While only the CDW phase is observed at low temperatures, both phases are present at room temperature. This is due to a defect population within the Sn layer, giving rise to a remnant CDW phase above the transition temperature.
Keywords
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