CRYSTALLINE AND QUASI-CRYSTALLINE PATTERNS IN X-RAY-DIFFRACTION FROM PERIODIC ARRAYS OF QUANTUM DOTS

Authors
DARHUBER AA HOLY V BAUER G WANG PD SONG YP TORRES CMS HOLLAND MC
Citation
Aa. Darhuber et al., CRYSTALLINE AND QUASI-CRYSTALLINE PATTERNS IN X-RAY-DIFFRACTION FROM PERIODIC ARRAYS OF QUANTUM DOTS, Europhysics letters, 32(2), 1995, pp. 131-136
Citations number
22
Categorie Soggetti
Physics
Journal title
Europhysics letters → ACNP
ISSN journal
02955075
Volume
32
Issue
2
Year of publication
1995
Pages
131 - 136
Database
ISI
SICI code
0295-5075(1995)32:2<131:CAQPIX>2.0.ZU;2-S
Abstract
The structural properties of a square periodic array of quantum dots o f a GaAs/AlAs superlattice were studied by X-ray diffractometry. If th e azimuthal direction of the primary beam can be expressed by integer Miller indices, the profile is perfectly periodic. However, if its azi muthal orientation phi is determined by tg(phi) approximate to 0.618 ( the golden mean value), the diffraction maxima exhibit Fibonacci seque nces in reciprocal space, ie. a quasi-periodic diffraction curve.