Bibliographic Details
| Title: |
Structure of the Te/Ge(0 0 1) surface studied by SPA-LEED |
| Authors: |
Weigand, W.1 weigand@dix.physik.uni-wuerzburg.de, Reuss, F.2, Hansen, L.2, Waag, A.2, Molenkamp, L.W.2, Kumpf, C.1, Sokolowski, M.1, Umbach, E.1 |
| Source: |
Surface Science. Aug2004, Vol. 562 Issue 1-3, p33-42. 10p. |
| Subjects: |
Chalcogens, Chemical elements, Germanium, Morphology |
| Abstract: |
The tellurium ad- and de-sorption on the Ge(0 0 1) surface have been studied using high-resolution low energy electron diffraction and reflection high-energy electron diffraction. Upon adsorption of one monolayer of Te at 280 °C a streaky (2 × 1) reconstruction occurs, which can be explained by a missing-row model. Upon annealing the surface transforms to a c(2 × 2)-(2 × 1) mixed reconstruction. A splitting of the superstructure spots was found which indicates an ordered arrangement of strip-like domains on the surface. We address the question of both the atomic and the domain structure of the Te-adlayer prior to desorption and present a model for the entire desorption process. Furthermore, a (1 1 3)-faceting of the (0 0 1) surface which occurs upon Te-adsorption at a higher substrate temperature (380 °C) was investigated. [Copyright &y& Elsevier] |
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| Database: |
Engineering Source |
