Self-Organized Growth of Alloy Superlattices
Journal Article
·
· Nature
OSTI ID:1080
We predict theoretically and demonstrate experimentally the spontaneous formation of a superlattice during crystal growth. When a strained alloy grows by "step flow", the steps at the surface form periodic bunches. The resulting modulated strain biases the incorporation of the respective alloy components at different steps in the bunch, leading to the formation of a superlattice. X-ray diffraction and electron microscopy for SiGe grown on Si give clear evidence for such spontaneous superlattice formation.
- Research Organization:
- Sandia National Laboratories, Albuquerque, NM, and Livermore, CA
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 1080
- Report Number(s):
- SAND98-2351J; ON: DE00001080
- Journal Information:
- Nature, Journal Name: Nature
- Country of Publication:
- United States
- Language:
- English
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