New Features of the Ge(111) Surface with Co-Existing c(2 × 8) and 2 × 2 Reconstructions Investigated by Scanning Tunneling Microscopy

  • A. Goriachko Department of Physical Electronics, Taras Shevchenko National University of Kyiv
  • P. V. Melnik Department of Physical Electronics, Taras Shevchenko National University of Kyiv
  • M. G. Nakhodkin Department of Physical Electronics, Taras Shevchenko National University of Kyiv
Keywords: germanium, surface, reconstruction, scanning tunneling microscopy

Abstract

The c(2×8) ground state reconstruction of the Ge(111) surface can be easily disrupted by the 2×2 reconstruction, since both of them are rather close to each other in terms of the surface free energy. Both structures are comprehensively studied in the literature. However, new surface features can be found on the borders between c(2×8) and 2×2 domains of various registries and orientations. We report scanning tunneling microscopy observations and suggest atomic models for the linear chains of 2×2 cells or c(2×4) cells, as well as adatom/restatom group vacancies, including corner holes of a similar geometry, like the case of the Si(111)-7 × 7 surface.

References

C.B. Duke, Chem. Rev. 96, 1237 (1996). https://doi.org/10.1021/cr950212s

G. Binnig, H. Rohrer, Ch. Gerber et al., Phys. Rev. Lett. 50, 120 (1983). https://doi.org/10.1103/PhysRevLett.50.120

K. Takayanagi and Y. Tanishiro, Phys. Rev. B 34, 1034 (1986). https://doi.org/10.1103/PhysRevB.34.1034

R.S. Becker, B.S. Swartzentruber, J.S. Vickers et al., Phys. Rev. B 39, 1633 (1989). https://doi.org/10.1103/PhysRevB.39.1633

E.S. Hirschorn, D.S. Lin, F.M. Leibsle et al., Phys. Rev. B 44, 1403 (1991). https://doi.org/10.1103/PhysRevB.44.1403

R.M. Feenstra, G. Meyer, F. Moresco et al., Phys. Rev. B 64, 081306R (2001). https://doi.org/10.1103/PhysRevB.64.081306

W.S. Verwoerd, V. Nolting, P. Badziag, Surf. Sci. 241, 135 (1991). https://doi.org/10.1016/0039-6028(91)90218-H

G. Lee, H. Mai, I. Chizhov et al., J. of Vac. Sci. and Techn. A 16, 1006 (1998). https://doi.org/10.1116/1.581222

G. Lee, H. Mai, I. Chizhov et al., Surf. Sci. 463 55 (2000). https://doi.org/10.1016/S0039-6028(00)00596-3

I.V. Lyubinetsky, P.V. Melnik, N.G. Nakhodkin et al., Vacuum 46, 219 (1995). https://doi.org/10.1016/0042-207X(94)00047-6

I. Razado-Colambo, J. He, H. Zhang et al., Phys. Rev. B 79, 205410 (2009). https://doi.org/10.1103/PhysRevB.79.205410

P. Molinas-Mata, J. Zegenhagen, Solid State Comm. 84, 393 (1992). https://doi.org/10.1016/0038-1098(92)90484-Q

D.J. Chadi, and C. Chiang, Phys. Rev. B 23, 1843 (1981). https://doi.org/10.1103/PhysRevB.23.1843

D. Drakova and G. Doyen, Progr. Surf. Sci. 46 251 (1994). https://doi.org/10.1016/0079-6816(94)90085-X

T.M. Jung, R.J. Phaneuf, and E.D. Williams, Surf. Sci. 254 235 (1991). https://doi.org/10.1016/0039-6028(91)90656-D

N. Takeuchi, A. Selloni, and E. Tosatti, Phys. Rev. Lett. 69 648 (1992). https://doi.org/10.1103/PhysRevLett.69.648

R. Feidenhans'l, J.S. Pedersen, J. Bohr et al., Phys. Rev. B 38, 9715 (1988). https://doi.org/10.1103/PhysRevB.38.9715

A.J. Mayne, F. Rose, C. Bolis et al., Surf. Sci. 486, 226 (2001). https://doi.org/10.1016/S0039-6028(01)01057-3

S.Yu. Bulavenko, P.V. Melnik, M.G. Nakhodkin et al., Surf. Sci. 600, 1185 (2006). https://doi.org/10.1016/j.susc.2006.01.021

A. Goriachko, P.V. Melnik, A. Shchyrba et al., Surf. Sci. 605, 1771 (2011). https://doi.org/10.1016/j.susc.2011.06.004

A. Goriachko, A. Shchyrba, P.V. Melnik et al., Ukr. J. Phys. 59 805 (2014). https://doi.org/10.15407/ujpe59.08.0805

U. K?ohler, O. Jusko, G. Pietsch et al., Surf. Sci. 248 321 (1991). https://doi.org/10.1016/0039-6028(91)91178-Z

B.S. Swartzentruber, Phys. Rev. Lett. 76 459 (1996). https://doi.org/10.1103/PhysRevLett.76.459

Published
2019-01-10
How to Cite
Goriachko, A., Melnik, P., & Nakhodkin, M. (2019). New Features of the Ge(111) Surface with Co-Existing c(2 × 8) and 2 × 2 Reconstructions Investigated by Scanning Tunneling Microscopy. Ukrainian Journal of Physics, 60(11), 1132. https://doi.org/10.15407/ujpe60.11.1132
Section
Nanosystems