Scanning tunneling microscope of the "16×2" reconstructed Si(110) surface

Journal of Applied Physics

Volumn 81, Issue 2, 1997, Pages 994-996

  Packard, William E ^a   Dow, John D ^a  

^a ARIZONA STATE UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CRYSTAL STRUCTURE; CRYSTAL SYMMETRY; MATHEMATICAL MODELS; MATHEMATICAL TRANSFORMATIONS; SCANNING TUNNELING MICROSCOPY; SEMICONDUCTING SILICON;

BOND LENGTH; MESOCRYSTALS; SURFACE RECONSTRUCTION;

SURFACES;

EID: 0030737831     PISSN: 00218979     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.364227     Document Type: Article

References (20)

1. J. van Loenen, D. Dijkkamp, and A. J. Hoeven, J. Microsc. 152, 472 (1988).
2. Y. Yamamoto, Surf. Sci. 313, 155 (1994) tabulates reconstructions observed by various authors on the Si(110) surface.
3. The surface unit cell (one macromolecule) contains two strached-hexagons and two stripes in the a″ direction, one up-stripe and one down-stripe (Fig. 2). There are 8 adatoms (A1, A2, A1′, A2′, and four B) per up-stripe and 6 (A1, A2, and four B) per down-stripe. The down-stripe is missing the first layer of Si atoms. There are 24 first-layer atoms per up-stripe. There are 55 atoms in the second-layer. We do not include in the unit cell any third-layer atoms, although two dimers do involve this layer and bond-relaxation clearly involves the third-layer as well as layers farther into the bulk. This is a total of 93 atoms.
4. Scanning Tunneling Microscopy I, edited by H.-J. Güntherodt and R. Wiesendanger, Springer Series in Surface Sciences, Vol. 20 (Springer, Berlin, 1992), and references therein.
5. J. Takayanagi, Y. Tanishiro, M. Takahashi, and S. Takahashi, Surf. Sci. 164, 367 (1985).
6. Y. Uenishi, M. Tsugai, and M. Mehregany, J. Micromech. Microeng. 5, 319 (1995).
7. S. Y. Tong, A. R. Lubinsky, B. J. Mrstik, and M. A. van Hove, Phys. Rev. B 17, 3303 (1978).
8. R. E. Allen, H. P. Hjalmarson, and J. D. Dow, Surf. Sci. 110, L625 (1981); D. V. Froelich, M. E. Lapeyre, J. D. Dow, and R. E. Allen, Superlattices Microstruct. 1, 87 (1985).
9. R. E. Allen, H. P. Hjalmarson, and J. D. Dow, Surf. Sci. 110, L625 (1981); D. V. Froelich, M. E. Lapeyre, J. D. Dow, and R. E. Allen, Superlattices Microstruct. 1, 87 (1985).
10. -11 Torr. Surfaces were prepared by ohmic beating to ≈1150 to 1200 °C, in several second increments.
11. N. Safta, J. P. Lacharme, A. Cricenti, A. Taleb-Ibrahimi, G. Indlekofer, V. Aristov, C. A. Sebenne, G. Le Lay, and B. Nesterenko, Nucl. Instrum. Methods Phys. Res. B 97, 372 (1995).
12. A1 sites are "top" sites and have an atom underneath the adatom, while A2 sites are "hollow" sites with no atom underneath.
13. a″ and b″ span the surface unit cell shown in Fig. 2, where a″=5a+11b and b″=2(b-a).
14. Total energy calculations for the fictitious Si(111)-2×2 reconstruction show that its adatoms all have bond-lengths within ≈5% of the naturalSi-Si bond-length. See Ref. 14.
15. R. D. Meade and D. Vanderbilt, Phys. Rev. B 40, 3905 (1989).
16. R. S. Becker, R. S. Swartzentruber, and J. S. Vickers, J. Vac. Sci. Technol. A 6, 472 (1988).
17. W. E. Packard and J. D. Dow (to published).
18. The corresponding vectors for [1,1,2]-stripes are a′=17b+a and b′=2(b+a).
19. The down-stripe hexagon also lies lower by c, where |c|=1.92 Å.
20. Facets of the [15,17,1] type have been observed previously (Ref. 2), but the model of the facets proposed here is new.