RHEED study of the (1 1 0) cleavage surface of CdTe:Cr single crystals

The structure of (1 1 0) plane of Cr-doped CdTe single crystals has been studied by reflection high energy electron diffraction and scanning electron microscopy. Diffraction patterns consist of diffraction spots and Kikuchi lines. However, for very small incident angle, the Debye rings are observed....

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Veröffentlicht in:	Surface science 2007-03, Vol.601 (5), p.1212-1217
Hauptverfasser:	Sagan, P., Kuzma, M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Cadmium telluride Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science rheology Diluted magnetic semiconductors Exact sciences and technology Physics Reflection high energy electron diffraction Surface structure, morphology, roughness and topography
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Beschreibung
Zusammenfassung:	The structure of (1 1 0) plane of Cr-doped CdTe single crystals has been studied by reflection high energy electron diffraction and scanning electron microscopy. Diffraction patterns consist of diffraction spots and Kikuchi lines. However, for very small incident angle, the Debye rings are observed. The constant lattice attributed to these rings is 0.8% less then for pure CdTe. These anomalous properties of the near surface layer are likely to occur due to the concentration of Cr atoms creating compressive surface strains or the effect of crystal cleavage.
ISSN:	0039-6028 1879-2758
DOI:	10.1016/j.susc.2006.12.022