Second-layer nucleation in coherent Stranski-Krastanov growth of quantum dots

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Show simple item record Prieto, José Emilio Markov, Ivan
dc.contributor.other UAM. Departamento de Física de la Materia Condensada es_ES 2016-03-07T16:55:51Z 2016-03-07T16:55:51Z 2011-11-04
dc.identifier.citation Physical Review B 84.19 (2011): 195417 en_US
dc.identifier.issn 1098-0121 (print) es_ES
dc.identifier.issn 1550-235X (online) es_ES
dc.description.abstract We have studied the monolayer-bilayer transformation in the case of the coherent Stranski-Krastanov growth. We have found that the energy of formation of a second-layer nucleus is largest at the center of the first-layer island and smallest on its corners. Thus nucleation is expected to take place at the corners (or the edges) rather than at the center of the islands as in the case of homoepitaxy. The critical nuclei have one atom in addition to a compact shape, which is either a square of i×i or a rectangle of i×(i-1) atoms, with i>1 an integer. When the edge of the initial monolayer island is much larger than the critical nucleus size, the latter is always a rectangle plus an additional atom, adsorbed at the longer edge, which gives rise to a new atomic row in order to transform the rectangle into the equilibrium square shape en_US
dc.description.sponsorship This work was supported by the Spanish MiCInn, Project No. FIS2008-01431 en_US
dc.format.extent 6 pag. es_ES
dc.format.mimetype application/pdf en
dc.language.iso eng en
dc.publisher American Physical Society en_US
dc.relation.ispartof Physical Review B - Condensed Matter and Materials Physics en_US
dc.rights © 2011 American Physical Society en_US
dc.title Second-layer nucleation in coherent Stranski-Krastanov growth of quantum dots en_US
dc.type article en
dc.subject.eciencia Física es_ES
dc.relation.publisherversion es_ES
dc.identifier.doi 10.1103/PhysRevB.84.195417 es_ES
dc.identifier.publicationfirstpage 195417 es_ES
dc.identifier.publicationissue 19 es_ES
dc.identifier.publicationlastpage 195417 es_ES
dc.identifier.publicationvolume 84 es_ES
dc.relation.projectID Gobierno de España. FIS2008-01431 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion en
dc.rights.accessRights openAccess en

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