On Application of Leed to Study the Dynamics of Two-Dimensional Ordering Full article
Conference |
Physics of solid surfaces 1987 : 4th Symposium on Surface Physics 07-11 Sep 1987 , Bechyne |
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Source | Physics of Solid Surfaces 1987 Compilation, 1988. 365 c. ISBN 9780444429728. |
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Journal |
Studies in Surface Science and Catalysis
ISSN: 0167-2991 |
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Output data | Year: 1988, Volume: 40, Pages: 362-363 Pages count : 2 DOI: 10.1016/S0167-2991(08)65088-0 | ||
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Abstract:
The kinetics of domain growth in two-dimensional systems has been the matter of interest in recent times. Attention is focused on two-dimensional systems, which are quenched from high temperatures in a disordered phase to a temperature below a critical one of an order–disorder transition. This problem may be studied experimentally using low-energy electron diffraction (LEED) provided that the average domain size, R, is lower than the coherence LEED length, L. In LEED experiments, the domain growth is manifested by the appearance of the Bragg reflections arising from the new superlattice structure. An elementary derivation of the dependence of the LEED superlattice intensity (l) on the average domain size is discussed. The observed superlattice LEED intensity is found to be proportional to φ2R2. This relationship is derived using physical consideration. A more formal way of derivation of this relationship is based on the scaling hypothesis for the structure factor. According to general theory, the growth law for the domain size has a power–law form, R(t ) ∼ tX, where x is the universal exponent. For the two-fold degenerate ordering, x = 1/2; in this case, it becomes evident I(t) is also proportional to t. From these, some experimental data has been analyzed.
Cite:
Zhdanov V.P.
On Application of Leed to Study the Dynamics of Two-Dimensional Ordering
In compilation Physics of Solid Surfaces 1987. 1988. – C.362-363. – ISBN 9780444429728. DOI: 10.1016/S0167-2991(08)65088-0 Scopus РИНЦ
On Application of Leed to Study the Dynamics of Two-Dimensional Ordering
In compilation Physics of Solid Surfaces 1987. 1988. – C.362-363. – ISBN 9780444429728. DOI: 10.1016/S0167-2991(08)65088-0 Scopus РИНЦ
Dates:
Published print: | Jan 1, 1988 |
Published online: | Jan 1, 2009 |
Identifiers:
Scopus | 2-s2.0-79957592977 |
Elibrary | 30705930 |
OpenAlex | W1989658255 |
Citing:
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