Atomic Structure of Buried InAs Sub-Monolayer Depositions in GaAs
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概要
- 論文の詳細を見る
The atomic structure of sub-monolayer depositions fabricated by an alternating deposition of 0.5 monolayer InAs and 16 monolayer GaAs is revealed by cross-sectional scanning tunneling microscopy. The resulting InAs-rich structures are about 5 nm wide and laterally separated from each other by about 2 nm, yielding a very high density above $10^{12}$ cm-2. The InAs-rich material is not only found within the deposition layer, but remarkably segregated with a segregation coefficient $R\sim 0.7$ over several monolayers along the growth direction. A similar segregation coefficient is found in the case of only 4 monolayer GaAs spacer thickness, revealing a more general growth mechanism for sub-monolayer depositions.
- 2010-10-25
著者
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Pohl Udo
Institut Fur Festkorperphysik Technische Universitat Berlin
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Bimberg Dieter
Institut Fur Festkorperphysik Technische Universitat Berlin
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STRITTMATTER Andre
Institut fur Festkorperphysik, Technische Universitat Berlin
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Ivanova Lena
Institut Fur Festkorperphysik Technische Universitat Berlin
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Eisele Holger
Institut Fur Festkorperphysik Technische Universitat Berlin
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Lenz Andrea
Institut für Festkörperphysik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germa
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Becker Jonas
Institut für Festkörperphysik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germa
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Lenz Ernst
Institut für Festkörperphysik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germa
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Luckert Franziska
Institut für Festkörperphysik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germa
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Pötschke Konstantin
Institut für Festkörperphysik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germa
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Dähne Mario
Institut für Festkörperphysik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germa
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Lenz Andrea
Institut Fur Festkorperphysik Technische Universitat Berlin
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Becker Jonas
Institut Fur Festkorperphysik Technische Universitat Berlin
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Lenz Ernst
Institut Fur Festkorperphysik Technische Universitat Berlin
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Strittmatter Andre
Institut Fur Festkorperphysik Technische Universitat Berlin
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Luckert Franziska
Institut Fur Festkorperphysik Technische Universitat Berlin
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Potschke Konstantin
Institut Fur Festkorperphysik Technische Universitat Berlin
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Pohl Udo
Institut für Festkörperphysik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germany
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Bimberg Dieter
Institut für Festkörperphysik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germany
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