Digitale Medien
Copenhagen
:
International Union of Crystallography (IUCr)
Applied crystallography online
32 (1999), S. 859-863
ISSN:
1600-5767
Quelle:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Thema:
Geologie und Paläontologie
,
Physik
Notizen:
Localized destructive interference can be obtained for specific values of the angle of incidence when studying semiconductor superlattices with X-ray reflectivity at fixed wavelength. Kinematical calculations show that the difference between the real parts of the refractive index of the layers must be small, and that the number of superlattice periods must be optimized to enhance the destructive interference. An experimental example, involving a CdTe/CdZnTe superlattice, and optical matrix simulations for SiGe/Si superlattices are presented to illustrate this effect. Finally, it is shown that such structures can be tailored to act as energy filters at fixed angles of incidence.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1107/S0021889899006238
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