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Generation of an ordered Ge quantum dot array in an amorphous silica matrix by ion beam irradiation (CROSBI ID 158988)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Buljan, Maja ; Bogdanović Radović, Ivančica ; Karlušić, Marko ; Desnica, Uroš ; Radić, Nikola ; Skukan, Natko ; Dražić, Goran ; Ivanda, Mile ; Gamulin, Ozren ; Matej, Zdenek et al. Generation of an ordered Ge quantum dot array in an amorphous silica matrix by ion beam irradiation // Physical review. B, Condensed matter and materials physics, 81 (2010), 085321-1-085321-8. doi: 10.1103/PhysRevB.81.085321

Podaci o odgovornosti

Buljan, Maja ; Bogdanović Radović, Ivančica ; Karlušić, Marko ; Desnica, Uroš ; Radić, Nikola ; Skukan, Natko ; Dražić, Goran ; Ivanda, Mile ; Gamulin, Ozren ; Matej, Zdenek ; Valeš, Vaclav ; Grenzer, Joerg ; Cornelius, Thomas ; Metzger, Hartmund Till ; Holy, Vaclav

engleski

Generation of an ordered Ge quantum dot array in an amorphous silica matrix by ion beam irradiation

We studied the generation of an ordered quantum dot array in an amorphous silica matrix by ion beam irradiation. In particular we investigated the influence of the irradiation process on the nucleation of Ge clusters, on the correlations in their positions and on the crystalline quality of Ge quantum dots formed after subsequent annealing. We have developed a method for the description of the intensity of grazing-incidence x-ray small angle scattering from irradiated multilayers, that enables a precise determination of the arrangement of quantum dots as well as their position correlation and size distribution. The analysis shows that the irradiation causes an ordering of Ge clusters along the irradiation direction, substantially improving the correlation in their positions. The observed phenomena are explained and simulated by a Monte-Carlo model based on the modification of local Ge density induced by ion tracks in the irradiated multilayers.

Ge; quantum dots; ion beam irradiation; quantum dot lattices

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Podaci o izdanju

81

2010.

085321-1-085321-8

objavljeno

1098-0121

10.1103/PhysRevB.81.085321

Povezanost rada

Fizika

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