Publications

X-ray analysis of spontaneous lateral modulation in (InAs)n/(AlAS)m short-period superlattices

Li, J.H.; Holý, V.; Zhong, Z.; Kulik, J.; Moss, S.C.; Norman, A.G.; Mascarenhas, A.; Reno, J.L.; Follstaedt, D.M.

The lateral composition modulation in (InAs)n/(AIAs)m short-period superlattices was studied by means of synchrotron x-ray diffraction. By choosing specific diffraction vectors having a large component closely parallel to the modulation direction, we are able to observe a number of lateral satellite peaks around the zero-order short-period superlattice peak. A model, incorporating both composition and strain, is used to simulate the intensities of these satellites. Our results provide a quantitative fit and permit the evaluation of the composition amplitude. © 2001 American Institute of Physics.