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COARSENING KINETICS OF A SPINODALLY DECOMPOSED VICINAL SI(111) SURFACE SCIE SCOPUS

Title
COARSENING KINETICS OF A SPINODALLY DECOMPOSED VICINAL SI(111) SURFACE
Authors
Kim, YJo, MHKim, TCYang, CWKim, JWHwang, JSNoh, DYKim, NDChung, JW
Date Issued
2009-04-17
Publisher
AMER PHYSICAL SOC
Abstract
The coarsening kinetics of the stepped-and-terrace groove structure formed on a vicinal Si(111) surface was investigated by in-situ synchrotron x-ray scattering. The time evolution of the groove period L at various temperatures below the (1x1)-to-(7x7) transition falls onto a universal curve when the annealing time is scaled by a scale factor. Distinctive stages of spinodal decomposition, coarsening, and saturation are identified in the evolution of the groove period. L increases following a power law, L similar to t(n) with n=1/6 and 0.29 in the initial stage and the late stage of coarsening, respectively. The initial coarsening proceeds via collective motion of step bunches while the late stage is dominated by the diffusion of individual steps.
URI
https://oasis.postech.ac.kr/handle/2014.oak/12467
DOI
10.1103/PhysRevLett.102.156103
ISSN
0031-9007
Article Type
Article
Citation
PHYSICAL REVIEW LETTERS, vol. 102, no. 15, page. 156103 - 1561034, 2009-04-17
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