Ga droplet surface dynamics during Langmuir evaporation of GaAs

Wen-Xin Tang, Changxi Zheng, Zhenyu Zhou, David Jesson, J Tersoff

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    9 Citations (Scopus)


    We describe the design and application of a low-energy electron microscope (LEEM) dedicated to the study of III-V materials. Recent studies of Langmuir (free) evaporation of GaAs(001) have been reviewed. Running Ga droplets are observed, and the motion is predicted and shown to slow and stop near a characteristic temperature. Striking bursts of daughter droplet nucleation accompany the coalescence of large parent droplets. These observations imply that evaporation and surface morphology are intimately connected, suggesting a new approach for the self-assembly and positioning of nanostructures on patterned surfaces.
    Original languageEnglish
    Pages (from-to)1 - 7
    Number of pages7
    JournalIBM Journal of Research and Development
    Issue number4
    Publication statusPublished - 2011

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