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Titolo:
Transformation of GaAs (001)-(111)B facet structure by surface diffusion during molecular beam epitaxy on patterned substrates
Autore:
Koshiba, S; Nakamura, Y; Noda, T; Watanabe, S; Akiyama, H; Sakaki, H;
Indirizzi:
Kagawa Univ, Kagawa 7610396, Japan Kagawa Univ Kagawa Japan 7610396Kagawa Univ, Kagawa 7610396, Japan Univ Tokyo, IIS, Tokyo 1068904, Japan Univ Tokyo Tokyo Japan 1068904Univ Tokyo, IIS, Tokyo 1068904, Japan Univ Tokyo, ISSP, Chiba 2778581, Japan Univ Tokyo Chiba Japan 2778581Univ Tokyo, ISSP, Chiba 2778581, Japan
Titolo Testata:
JOURNAL OF CRYSTAL GROWTH
, volume: 227, anno: 2001,
pagine: 62 - 66
SICI:
0022-0248(200107)227:<62:TOG(FS>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
QUANTUM-WIRE STRUCTURES; STIMULATED-EMISSION; GROWTH;
Keywords:
MBE; facet structure; diffusion; growth;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Koshiba, S Kagawa Univ, 2170-20 Hayashi Cho, Kagawa 7610396, Japan Kagawa Univ 2170-20 Hayashi Cho Kagawa Japan 7610396 96, Japan
Citazione:
S. Koshiba et al., "Transformation of GaAs (001)-(111)B facet structure by surface diffusion during molecular beam epitaxy on patterned substrates", J CRYST GR, 227, 2001, pp. 62-66

Abstract

The mechanisms of molecular beam epitaxy growth on the mesa patterned substrates which results in the formation of sharp ridge structure were investigated. A simple model, based oil the scanning electron microscope measurements, nicely explains the time dependent growth rates as well as the change of the facet shape during the formation of ridge structure originating fromthe strong Ga atoms migration. The estimated number of atoms crossing the boundary changes according to the alternating facet shape and this indicates the instability in the facet growth. As a result, the mechanism of mesa growth was clarified, which becomes self-regulatory while the facet shape and/or the boundary condition vary as the growth progresses. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 09/04/20 alle ore 20:14:37