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Surface alloying at InAsGaAs interfaces grown on (001) surfaces by molecular beam epitaxy

Surface alloying at InAsGaAs interfaces grown on (001) surfaces by molecular beam epitaxy,10.1016/S0039-6028(97)00355-5,Surface Science,J. G. Belk,C.

Surface alloying at InAsGaAs interfaces grown on (001) surfaces by molecular beam epitaxy   (Citations: 11)
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In situ scanning tunnelling microscopy and reflection high energy electron diffraction have been used to study InAsGaAs interfaces grown on (001) surfaces by molecular beam epitaxy. For the deposition of InAs on GaAs(001) a number of different surface reconstructions can be identified, depending on substrate temperature and InAs coverage, and there is significant evidence for alloying in the surface layer. An (In,Ga)As wetting layer is formed and the complete range of surface reconstructions are discussed, together with the tendency of indium atoms to segregate following the deposition of a further GaAs capping layer and the formation of GaAsInAsGaAs(001) interfaces. Finally, a comparison is made with the surface structure of GaAs layers deposited on InAs(001) substrates.
Journal: Surface Science - SURFACE SCI , vol. 387, no. 1, pp. 213-226, 1997
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    • ...For example, the 2D-3D transition can be investigated not only with the help of oscillation decay [27] but also with the help of change of diffraction pattern [29, 30] and chevron-shape spot [30]...
    • ...For example, the 2D-3D transition can be investigated not only with the help of oscillation decay [27] but also with the help of change of diffraction pattern [29, 30] and chevron-shape spot [30]...

    Ákos Nemcsics. In-Situ Investigation of the Growth of Low-Dimensional Structures

    • ...Other probes, such as RDS [33, 34], STM and X-ray diffraction, confirm this structural transition [35, 36]...

    Evgeni Penevet al. First-Principles Study of InAs/GaAs(001) Heteroepitaxy

    • ...For example, the 2D-3D transition can be investigated not onl yw ith the help of oscillation decay [33] but also with the help of change of diffraction pattern [37, 40, 41] and chevron-shape spot [41]...
    • ...For example, the 2D-3D transition can be investigated not onl yw ith the help of oscillation decay [33] but also with the help of change of diffraction pattern [37, 40, 41] and chevron-shape spot [41]...

    Ákos Nemcsics. Growth Information Carried by Reflection High-Energy Electron Diffract...

    • ...Experimentally it is clear that alloying occurs most readily on this surface [26, 27], but we need to consider in more detail whether the mechanism of the 2D-to-3D transition necessarily involves an alloy, as mentioned in the previous paragraph (see Sec...
    • ...The temperature dependence of the extent (rate) of alloy formation shows it to be an activated process, for which the most probable barrier is surface diffusion of In [27]...

    Bruce Joyceet al. Quantum Dots in the InAs/GaAs System

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