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Growth Mechanism Of Ring Shaped Nanostructures Self-Assembly Upon Droplet Epitaxy

Author

Listed:
  • X. TAN

    (Laboratory for Quantum Engineering and Micro-Nano Energy Technology, Faculty of Materials and Optoelectronic Physics, Xiangtan University, Hunan 411105, China)

  • J. X. ZHONG

    (Laboratory for Quantum Engineering and Micro-Nano Energy Technology, Faculty of Materials and Optoelectronic Physics, Xiangtan University, Hunan 411105, China)

  • G. W. YANG

    (State Key Laboratory of Optoelectronic Materials and Technologies, Institute of Optoelectronic and Functional Composite Materials, Nanotechnology Research Center, School of Physics Science and Engineering, Sun Yat-sen University, Guangzhou 510275, Guangdong, China)

Abstract

A quantitatively kinetic model has been established to address the self-assembly of the ring shaped nanostructures upon the droplet epitaxy via kinetic Monte Carlo simulations. The theoretical predictions about the temperature and As flux dependences of the self-assembly of the ring shaped nanostructures were in well agreement with recent experiments. It was found that the morphological evolution of the ring shaped nanostructures was attributed to the cooperation of the enhanced diffusion barriers of freeGaatoms in the inner ring region and the effects of the surface reconstruction around theGadroplets during the arsenization step.

Suggested Citation

  • X. Tan & J. X. Zhong & G. W. Yang, 2012. "Growth Mechanism Of Ring Shaped Nanostructures Self-Assembly Upon Droplet Epitaxy," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 19(03), pages 1-8.
    • Handle: RePEc:wsi:srlxxx:v:19:y:2012:i:03:n:s0218625x12500291
    DOI: 10.1142/S0218625X12500291
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