Atomic ordering and decomposition of lattice matched InxGa1-xAsyP1-y on InP(001)

Conference: IPRM 2011 - 23th International Conference on Indium Phosphide and Related Materials
05/22/2011 - 05/26/2011 at Berlin, Germany

Proceedings: IPRM 2011

Pages: 4Language: englishTyp: PDF

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Lenz, Andrea; Eisele, Holger; Genz, Florian; Pohl, Udo W.; Dähne, Mario (Technische Universität Berlin, Institut für Festkörperphysik, Hardenbergstraße 36, 10623 Berlin, Germany)
Franke, Dieter; Künzel, Harald (Fraunhofer-Institut für Nachrichtentechnik, Heinrich-Hertz-Institut, Einsteinufer 37, 10587 Berlin, Germany)

Atomic ordering and decomposition of InxGa1-xAsyP1-y grown lattice matched on InP(001) is investigated with cross-sectional scanning tunnelling microscopy. The atomic composition of the quaternary material is analyzed at both the (110) and ([underline1]10) cleavage surfaces, yielding two different decomposition effects on different length scales: a formation of columnar structures with widths amounting to some tens of nm and a CuPt-like ordering on the atomic scale.