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 (SNL), Albuquerque, NM, and Livermore, CA (United States)
- 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
Similar Records
Growth of Quantum Wires on Step-Bunched Substrate
Epitaxial (GaAs)[sub 1[minus]][sub [ital x]](Si[sub 2])[sub [ital x]] metastable alloys on GaAs(001) and (GaAs)[sub 1[minus]][sub [ital x]](Si[sub 2])[sub [ital x]] /GaAs strained-layer superlattices: Crystal growth, spinodal decomposition, and antiphase domains
Characterizing composition modulations in InAs/AlAs short-period superlattices
Technical Report
·
Tue Feb 01 00:00:00 EST 2005
·
OSTI ID:1080
Epitaxial (GaAs)[sub 1[minus]][sub [ital x]](Si[sub 2])[sub [ital x]] metastable alloys on GaAs(001) and (GaAs)[sub 1[minus]][sub [ital x]](Si[sub 2])[sub [ital x]] /GaAs strained-layer superlattices: Crystal growth, spinodal decomposition, and antiphase domains
Journal Article
·
Mon Aug 01 00:00:00 EDT 1994
· Journal of Applied Physics; (United States)
·
OSTI ID:1080
+2 more
Characterizing composition modulations in InAs/AlAs short-period superlattices
Journal Article
·
Mon Nov 01 00:00:00 EST 1999
· Physical Review, B: Condensed Matter
·
OSTI ID:1080
+6 more