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Statements

Subject Item
n2:RIV%2F00216224%3A14310%2F08%3A00025951%21RIV10-MSM-14310___
rdf:type
skos:Concept n10:Vysledek
dcterms:description
Diffuse x-ray scattering from threading dislocations in epitaxial structures is simulated numerically by a Monte Carlo method. The method allows one to simulate diffraction curves for dislocation types, where macroscopic approaches fail. That includes dislocation types for which analytical ensemble averaging is not feasible as well as microdiffraction curves from small sample volumes. In the latter case, the degree of statistic fluctuation of characteristic features is determined. The Monte Carlo method makes it possible to correlate quantitatively the widths of the microdiffraction curves to the densities of various dislocation types. The potential of the method has been demonstrated by a quantitative estimation of the density distribution of edge and screw threading dislocations in laterally overgrown epitaxial GaN structures, which is investigated by a full-field microdiffraction imaging technique. Diffuse x-ray scattering from threading dislocations in epitaxial structures is simulated numerically by a Monte Carlo method. The method allows one to simulate diffraction curves for dislocation types, where macroscopic approaches fail. That includes dislocation types for which analytical ensemble averaging is not feasible as well as microdiffraction curves from small sample volumes. In the latter case, the degree of statistic fluctuation of characteristic features is determined. The Monte Carlo method makes it possible to correlate quantitatively the widths of the microdiffraction curves to the densities of various dislocation types. The potential of the method has been demonstrated by a quantitative estimation of the density distribution of edge and screw threading dislocations in laterally overgrown epitaxial GaN structures, which is investigated by a full-field microdiffraction imaging technique.
dcterms:title
Diffuse x-ray scattering from statistically inhomogeneous distributions of threading dislocations beyond the ergodic hypothesis Diffuse x-ray scattering from statistically inhomogeneous distributions of threading dislocations beyond the ergodic hypothesis
skos:prefLabel
Diffuse x-ray scattering from statistically inhomogeneous distributions of threading dislocations beyond the ergodic hypothesis Diffuse x-ray scattering from statistically inhomogeneous distributions of threading dislocations beyond the ergodic hypothesis
skos:notation
RIV/00216224:14310/08:00025951!RIV10-MSM-14310___
n3:aktivita
n8:Z
n3:aktivity
Z(MSM0021620834), Z(MSM0021622410)
n3:cisloPeriodika
1
n3:dodaniDat
n9:2010
n3:domaciTvurceVysledku
n11:2966174 n11:9021329
n3:druhVysledku
n15:J
n3:duvernostUdaju
n7:S
n3:entitaPredkladatele
n14:predkladatel
n3:idSjednocenehoVysledku
363586
n3:idVysledku
RIV/00216224:14310/08:00025951
n3:jazykVysledku
n17:eng
n3:klicovaSlova
X-ray diffraction; X-ray topography; Microdiffraction; Rocking curve imaging; Dislocations; GaN
n3:klicoveSlovo
n4:Dislocations n4:GaN n4:Rocking%20curve%20imaging n4:X-ray%20topography n4:X-ray%20diffraction n4:Microdiffraction
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[31F6088145ED]
n3:nazevZdroje
Physical Review B
n3:obor
n18:BM
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
9
n3:rokUplatneniVysledku
n9:2008
n3:svazekPeriodika
77
n3:tvurceVysledku
Holý, Václav DenBaars, S. P. Speck, J. Lübbert, D. Mikulík, Petr Helfen, L. Ellyan, M. Baumbach, T. Keller, S.
n3:wos
000254542500034
n3:zamer
n16:MSM0021622410 n16:MSM0021620834
s:issn
1098-0121
s:numberOfPages
9
n6:organizacniJednotka
14310