ISSN:
1432-0630
Keywords:
68.55
;
82.65
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract A quantitative treatment of the crystallization kinetics in MBE growth of vicinal surfaces results the relation l 2=2D sτK between the surface diffusion coefficient D s, the time τ for a monolayer deposition and the interstep distance l at which the RHEED intensity oscillations disappear. The correction factor K depends on the size and the energy of the two-dimensional critical nucleus and it is estimated to be smaller than 10−2. The currently used interpretation of the RHEED intensity oscillations ignores the correction factor K and, therefore, the calculated values of D s are several orders of magnitude smaller than its real values. The surface transport during the time of growth interruption is discussed in connection with the tendency to three dimensional growth at every second interface (where a deposition of the material with strong intermolecular bonds starts) of a small period superlattice.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00324505
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