7×7 reconstruction of Ge(111) surfaces under compressive strain

H. J. Gossmann, J. C. Bean, L. C. Feldman, E. G. McRae, I. K. Robinson

Research output: Contribution to journalArticlepeer-review

112 Citations (Scopus)


We have discovered a correlation between lateral compressive strain in an elemental material and the reconstructed state of its surface. We studied continuous films of pure Ge epitaxially grown on Si(111) substrates. The in-plane lattice parameter varies continuously with film thickness while the surface symmetry changes from c2×8 to 7×7. The results indicate an important role of lateral compressive stress in the 7×7 reconstruction.

Original languageEnglish
Pages (from-to)1106-1109
Number of pages4
JournalPhysical review letters
Issue number10
Publication statusPublished - 1985

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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