Frank dislocation loops in HgTe/CdTe superlattices on CdTe/Si(211) B substrates

L. F. Fu, N. L. Okamoto, M. F. Chi, N. D. Browning, H. S. Jung, C. H. Grein

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The defect structures in HgTe/CdTe superlattices (SLs) on CdTe/Si(211) B substrates grown by molecular-beam epitaxy have been investigated using (scanning) transmission electron microscopy and electron energy loss spectroscopy. Straight Hg-rich defects perpendicular to the SLs have been observed near the substrate while Frank dislocation loops (FDLs) are seen far from the substrate. The Hg-rich defects exhibit only a compositional variation with no significant atomic shift, and can be considered to be a remnant of a FDL which has climbed by thermal diffusion during the growth.

Original languageEnglish
Article number023104
JournalJournal of Applied Physics
Volume104
Issue number2
DOIs
Publication statusPublished - 2008
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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