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Preparation of different BeTe surface reconstructions by decapping and thermal treatment
- Source :
- Journal of Applied Physics. 93:1511-1514
- Publication Year :
- 2003
- Publisher :
- AIP Publishing, 2003.
-
Abstract
- We report on the application of protective capping layers for nonultrahigh vacuum (UHV) transport of BeTe layers. It allows the subsequent recovery of the clean BeTe(100) surface by thermal decapping in UHV. For capping tellurium/selenium double layers with a thickness of about 0.2 μm are employed. After decapping by annealing which results in the desorption of Se at 150 °C and of Te at 260 °C, the low-energy electron diffraction pattern confirms the reestablishment of (2×1) surface reconstruction of BeTe(100). Subsequent annealing to 520 °C results in (3×1) reconstruction. In situ monitoring by Raman spectroscopy and reflection anisotropy spectroscopy is used to control the decapping process and the subsequent annealing-induced change in surface reconstruction.
Details
- ISSN :
- 10897550 and 00218979
- Volume :
- 93
- Database :
- OpenAIRE
- Journal :
- Journal of Applied Physics
- Accession number :
- edsair.doi...........b0c49935efe12b07000f78c48f1b5464
- Full Text :
- https://doi.org/10.1063/1.1532932