Eberl, Karl and Wegscheider, Werner and Schorer, R. and Abstreiter, Gerhard
Microscopic symmetry properties of (001) Si/Ge monolayer superlattices.
Physical Review B 43 (6), pp. 5188-5191.
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Depending on the composition of  oriented short period SimGen superlattices (m monolayers Si/n monolayers Ge) there are six different space groups. In case of m+n odd the microscopic periodicity is doubled to 2(m+n) monolayers due to the tetrahedral bonding. We prepared several superlattices namely Si2Ge3, Si3Ge3 and Si4Ge6 with low temperature molecular beam epitaxy. Using selected area ...
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