Journal
PHYSICAL REVIEW LETTERS
Volume 105, Issue 14, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.105.146102
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Funding
- Deutsche Forschungsgemeinschaft [SFB 762]
- Leipzig School of Natural Sciences Building with Molecules and Nano-objects (BuildMoNa) [GS 185/1]
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Heteroepitaxy can involve materials with a misfit of crystal structure. Rotation domains in the epilayer are a fundamental consequence. We derive a general expression for their (minimum) number which is determined by the mismatch of the rotational symmetries of the substrate and epilayer. In the case of a mismatch of rotational symmetry, the number of rotation domains of material A on material B is different from that of B on A. A larger number of rotation domains can occur due to domain structure or nearly fulfilled additional symmetries of the substrate surface.
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