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Symmetry properties of short period (001) Si/Ge superlattices

Eberl, Karl and Wegscheider, Werner and Abstreiter, Gerhard and Cerva, H. and Oppolzer, H. (1991) Symmetry properties of short period (001) Si/Ge superlattices. Superlattices and Microstructures 9 (1), pp. 31-33.

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Abstract

Depending on the composition of [001] 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 diffraction in the transmission electron microscope we found the microscopic periodicity of 10 monolayers for Si2Ge3 and Si4Ge6. For Si3Ge3 the vertical periodicity is six monolayers.

Item Type:Article
Institutions: Physics > Institute of Experimental and Applied Physics > Retired Professors > Group Werner Wegscheider
Identification Number:
ValueType
10.1016/0749-6036(91)90087-8DOI
Subjects:500 Science > 530 Physics
Status:Published
Refereed:Unknown
Created at the University of Regensburg:Unknown
Owner:Martin Kaiser
Deposited On:26 Oct 2009 14:24
Last Modified:20 Jul 2011 23:50
Item ID:9981
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