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https://hdl.handle.net/20.500.14279/1556
Τίτλος: | A constrained-equilibrium Monte Carlo method for quantum dots - the problem of intermixing | Συγγραφείς: | Kelires, Pantelis C. | metadata.dc.contributor.other: | Κελίρης, Παντελής | Major Field of Science: | Natural Sciences | Field Category: | Computer and Information Sciences | Λέξεις-κλειδιά: | Chemical bonds;Computer simulation;Depositions;Optoelectronic devices;Diffusion | Ημερομηνία Έκδοσης: | 5-Μαΐ-2004 | Πηγή: | Journal of Physics Condensed Matter, 2004, vol. 16, no. 17, pp. S1485-S1501 | Volume: | 16 | Issue: | 17 | Start page: | S1485 | End page: | S1501 | Περιοδικό: | Journal of Physics: Condensed Matter | Περίληψη: | Islands grown during semiconductor heteroepitaxy are in a thermodynamically metastable state. Experiments show that diffusion at the surface region, including the interior of the islands, is fast enough to establish local equilibrium. I review here applications of a Monte Carlo method which takes advantage of the quasi-equilibrium nature of quantum dots and is able to address the issue of intermixing and island composition. Both, Ge islands grown on the bare Si(100) surface and C-induced Ge islands grown on Si(100) precovered with C are discussed. In the bare case, the interlinking of the stress field with the composition is revealed. Both are strongly inhomogeneous. In the C-induced case, the interplay of strain and chemical effects is the dominant key factor. Islands do not contain C under any conditions of coverage and temperature. | URI: | https://hdl.handle.net/20.500.14279/1556 | ISSN: | 1361648X | DOI: | 10.1088/0953-8984/16/17/004 | Rights: | © Institute of Physics | Type: | Article | Affiliation: | University of Crete | Affiliation: | University of Crete | Publication Type: | Peer Reviewed |
Εμφανίζεται στις συλλογές: | Άρθρα/Articles |
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