-- card: 3061 from stack: in -- bmap block id: 0 -- flags: 0000 -- background id: 2674 -- name: -- part contents for background part 3 ----- text ----- 1 -- part contents for background part 4 ----- text ----- Infrared, IR, SiGe superlattices, Direct transitions -- part contents for background part 6 ----- text ----- Optimum Si-Si(1-x)Ge(x) structures with strong infrared spectra. -- part contents for background part 7 ----- text ----- R.J. Turton / M. Jaros -- part contents for background part 9 ----- text ----- Appl. Phys. Lett., 56, 767, 1990 -- part contents for background part 17 ----- text ----- Identified classes of SiGe superlattices that exhibit strong infrared spectra (IR). Optimum period range 24-32 monolayers.