Simulating the nucleation and growth of Ge quantum dots on Si using high-efficiency algorithms

Autor:	P. L. Novikov, A. V. Dvurechenskii, S. A. Rudin, A. S. Polyakov, A. V. Nenashev
Rok vydání:	2015
Předmět:	Materials science Nanostructure Monte Carlo method General Engineering Nucleation Parallel algorithm Nanotechnology Condensed Matter Physics Molecular physics Atomic diffusion Molecular dynamics Quantum dot General Materials Science Energy (signal processing)
Zdroj:	Nanotechnologies in Russia. 10:192-204
ISSN:	1995-0799 1995-0780
Popis:	Original approaches are presented for elucidating a microscopic mechanism of surface atomic diffusion and simulating the heteroepitaxial nanostructure growth on substrates with a complex relief. Using the molecular dynamics method, the energy surface of a pit-patterned Si substrate is mapped out and the conditions for the nucleation of more than one Ge island in a pit are established. A Monte Carlo model is developed that reproduces the Ge growth on Si with regard to elastic effects in a heterosystem. By the example of this Monte Carlo model, it is demonstrated how to reduce the calculation time by optimizing the description of the crystal lattice state in computer cache memory and by using parallel algorithms for working on a computer cluster.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ed604379747b0d4f6daefe5e3e5ece61 https://doi.org/10.1134/s1995078015020147 Zobrazit plný text záznamu Full text from SpringerLink