| Author(s): |
Regina Regan; Harry A. Atwater; Jonathan E. Guyer; Erik Meserole; Mark S. Gorrsky; |
| Title: |
Kinetics Governing Phase Separation of Nanostructured Sn(x)Ge(1a 'x) Alloys. |
| Published: |
June 05, 2006 |
| Abstract: |
We have studied the dynamic phenomenon of SnxGe1a 'x/Ge phase separation during deposition by molecular beam epitaxy on Ge(001) substrates.Phase-separation leads to the formation of direct bandgap semiconductor nanowire arrays embedded in Ge oriented along the [001] growth direction. The effect of strain and composition on the periodicity were decoupled by growth on Ge(001) and partially relaxed SiYGe-1-y/Ge(001) virtual substrates. The experimental results are compared with a kinetic linear instability model and the experimental results show good agreement with this theoretical model for phase separation during dynamic growth. |
| Citation: |
Physical Review B (Condensed Matter and Materials Physics) |
| Keywords: |
Asaro-Tiller;decomposition;solute expansion;Stranski-Krastanov |
| Research Areas: |
Materials Science |
| PDF version: |
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