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Microscopic Morphology of Gallium Clusters on GaAs(001)

  • T. D. Lowes (a1) and M. Zinke-Allmang (a1)


A microscopic study of the system Ga/GaAs(001) is presented to explain the origin for different Ga cluster shapes on a single surface. The model is based on the finding that a significant fraction of the Ga clusters reaches below the GaAs surface plane and the shape of these depressions represents a minimum energy configuration if low-index planes are formed. Other metal/compound semiconductor systems may display similar shape modifications.



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Ren, Y., Zinke-Allmang, M., Feldman, L. C. and van Saarloos, W., Mat. Res. Soc. Symp. Proc. 237, 255 (1992).
[2] Zinke-Allmang, M., Feldman, L. C. and van Saarloos, W., Phys. Rev. Lett. 68, 2358 (1992).
[3] Lowes, T. D. and Zinke-Allmang, M., submitted.


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