1. Films Refinement-Technical details

6. Checks Self Consistency Neutrons EXAFS TEM Mossbauer Scanning Probe
Controlled Roughness
CONSISTENCY WITH OTHER KNOWLEDGE
(Lattice mismatch, rough substrate

7. OTHERS APPLICATIONS 1980s-2000s Metallic Superlattices
Superconducting (Low & High Tc)
Magnetic Bilayers
Semiconducting Superlattices
Organic Films & Superlattices
OTHERS

8. SUPREX: http//:ischuller.ucsd.edu

9. Is the design preserved ?
INTERFACIAL LAYER
InAs/IF/GaSb/IF
InAs/GaSb
49Å/5.13Å/40Å/5.13Å
49Å/3.99Å/40Å/3.99Å
49Å/3.42Å/40Å/3.42Å
49Å/2.85Å/40Å/2.85Å
49Å/0Å/40Å/0Å
GaSb wafer + buffer

10. Organic Molecule Metallo-Phthalocyanine
M – C32N8H16

11. FePc/H2Pc-Superlattice
Modulation Length
FePc: 25 Å
Al2O3 (sapphire)
Substrate temperature during deposition: 150 oC
H2Pc sublimes near 350 oC, FePc near 400 oC
Deposition rate: ~ 1 nm / min.

12. FePc/ H2Pc Superlattices
Data from sample T superlattice
X-ray diffraction peaks for (FePc/H2Pc)4 superlattice (red dots). The background was subtracted for the SUPREX fit (blue line). From SUPREX, layer A is 1.57 layers or 20.6 Å thick, layer B is 5.99 layers or 76.4 Å thick; so together 97 Å, somewhat thinner than 108 Å as calculated from periodicity.
T. Gredig, I. K. Schuller Unpublished