Formation of long-range ordered quantum dots arrays in amorphous matrix by ion beam irradiation

Abstract

Articles you may be interested inChains of quantum dot molecules grown on Si surface pre-patterned by ion-assisted nanoimprint lithography Appl. Phys. Lett. 105, 153106 (2014); 10.1063/1.4898579Tuning the properties of Ge-quantum dots superlattices in amorphous silica matrix through deposition conditions

Self-assembling of Ge quantum dots in an alumina matrix

“…17 Therefore the production of regularly ordered Ge QDs in an alumina matrix is of great interest for production of new materials. While self-ordering growth of Ge QDs in silica matrix was reported recently, 7,8,18,19 no similar research was carried out for alumina. Another important feature worth to note is that the self-ordering growth of QD lattice was achieved so far only by a multilayer deposition in crystalline and amorphous systems 6,7 while similar observations have not been found in continuous thicker layers.…”

Grazing-incidence small-angle X-ray scattering: application to the study of quantum dot lattices

“…A further example considers a QD system formed by ion beam irradiation of a fully amorphous (Ge+SiO 2 )/SiO 2 multilayer (Buljan, Bogdanović-Radović et al, 2009, 2010. The angle of the irradiation was 60 with respect to the multilayer surface.…”

“…Owing to the ion beam irradiation, QDs are formed along the traces of individual ions (Buljan, Bogdanović-Radović et al, 2009, 2010. We choose the basis vector a ð3Þ to be directed along the traces.…”

“…The ordering in such systems was achieved by growth at an elevated substrate temperature, at which an interplay of diffusion and surface morphology mechanisms causes the self-organized growth and formation of three-dimensional QD lattices. Some other recent investigations (Buljan, Bogdanović-Radović et al, 2009, 2010 demonstrated the formation of long-range-ordered quantum dot arrays in an amorphous matrix by ion beam irradiation. In this growth method the ordering is induced by irradiation of an entirely amorphous multilayer by light ions under oblique incidence.…”

Aharonov–Bohm ring with a side-coupled quantum dot array as a spin switch

“…Quantum dots ͑QDs͒ are among the most studied mesoscopic systems due to their physical properties as well as their potential applications in electronic devices. 10 The transport property of the QD array is a subject of considerable interest due to its possible applications for photoelectric devices and quantum computing, and was widely investigated in recent years. Recently, motivated by the pioneering work of Datta and Das, 1 there have been a great deal of theoretical and experimental work concerning the possibility of controlling the electron spin by means of the Rashba spin-orbit interaction ͑RSOI͒ with or without the help of the magnetic field and the magnetic material.…”