Becker, R. S.Golovchenko, JeneSwartzentruber, B. S.2016-11-181985Becker, R. S., J. A. Golovchenko, and B. S. Swartzentruber. 1985. Tunneling Images of Germanium Surface Reconstructions and Phase Boundaries. Physical Review Letters 54, no. 25: 2678–2680. doi:10.1103/physrevlett.54.2678.0031-9007http://nrs.harvard.edu/urn-3:HUL.InstRepos:29407046We 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.en-USJournal Article2016-11-1810.1103/PhysRevLett.54.2678