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http://hdl.handle.net/1843/50733| Type: | Artigo de Periódico |
| Title: | Study of growth properties of InAs islands on patterned InP substrates defined by focused ion beam |
| Authors: | Rodrigo Ribeiro de Andrade Ângelo Malachias de Souza Douglas Rodrigues Miquita Thiago de Lourenço e Vasconcelos Rudy Massami Sakamoto Kawabata Maurício Pamplona Pires Patrícia Lustoza de Souza Wagner Nunes Rodrigues |
| Abstract: | This work describes morphological and crystalline properties of the InAs islands grown on templates created by focused ion beam (FIB) on indium phosphide (InP) substrates. Regular arrangements of shallow holes are created on the InP (001) surfaces, acting as preferential nucleation sites for InAs islands grown by Metal-Organic Vapor Phase Epitaxy. Ion doses ranging from 1015 to 1016 Ga+/cm2 were used and islands were grown for two sub-monolayer coverages. We observe the formation of clusters in the inner surfaces of the FIB produced cavities and show that for low doses templates the nanostructures are mainly coherent while templates created with large ion doses lead to the growth of incoherent islands with larger island density. The modified island growth is described by a simple model based on the surface potential and the net adatom flow to the cavities. We observe that obtained morphologies result from a competition between coarsening and coalescence mechanisms. |
| Subject: | Modelos de crescimento Nanoestrutura Nucleação Difração de raios X |
| language: | eng |
| metadata.dc.publisher.country: | Brasil |
| Publisher: | Universidade Federal de Minas Gerais |
| Publisher Initials: | UFMG |
| metadata.dc.publisher.department: | ICX - DEPARTAMENTO DE FÍSICA |
| Rights: | Acesso Restrito |
| metadata.dc.identifier.doi: | https://doi.org/10.1016/j.physe.2016.11.011 |
| URI: | http://hdl.handle.net/1843/50733 |
| Issue Date: | 2016 |
| metadata.dc.url.externa: | https://www.sciencedirect.com/science/article/pii/S1386947716304428 |
| metadata.dc.relation.ispartof: | Physica E: Low-dimensional Systems and Nanostructures |
| Appears in Collections: | Artigo de Periódico |
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