Tunneling Images of Germanium Surface Reconstructions and Phase Boundaries

Phys. Rev. Lett. 54, 2678 – Published 24 June 1985
R. S. Becker, J. A. Golovchenko, and B. S. Swartzentruber

Abstract

We have imaged with the tunneling microscope the microscopic surface topography of germanium layers grown by molecular-beam epitaxy on Si(111)-7×7. The surface structures corresponding to Ge(111)-c2×8 and Ge(111)-7×7 are resolved. The Ge-c2×8 structure is shown to consist of a coherent combination of two simpler units both of which exist independently on the surface. The associated phase boundaries are illustrated. The Ge 7×7 structure is shown to be similar to that obtained for Si(111). Defects in the cell are also imaged.

DOI: http://dx.doi.org/10.1103/PhysRevLett.54.2678

  • Received 2 April 1985
  • Published in the issue dated 24 June 1985

© 1985 The American Physical Society

Authors & Affiliations

R. S. Becker, J. A. Golovchenko, and B. S. Swartzentruber

  • AT&T Bell Laboratories, Murray Hill, New Jersey 07974

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