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Atomic Structure of Ultrathin Erbium Silicides on Si(111)

  • M. Lohmeier (a1), W. J. Huisman (a1), G. Ter Horst (a1), P. M. Zagwijn (a1), A. Nishiyama (a2), C. L. Nicklin (a3), T. S. Turner (a4) and E. Vlieg (a1)...

Abstract

The atomic structure of thin epitaxial erbium suicides on Si(111) substrates has been studied in situ by means of surface X-ray diffraction and medium-energy ion scattering. In the sub-monolayer range, a two-dimensional (2D) suicide is formed within a 1 × 1 unit cell, with the Er atoms occupying T4 sites and a Si bilayer on top which is 180° rotated with respect to the bulk (5-type). Suicide layers with a thickness of 3 monolayers exhibit a regular network of Si vacancies which release the compressive strain of the graphite-like Si layers between adjacent Er layers. This results in a √3 × √3 R 30° unit cell, in which 3 out of 5 Si atoms are displaced towards the vacancy, and in which 3 Er atoms relax away from the vacancy.

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1. Knapp, J.A. and Picraux, S.T., Appl. Phys. Lett. 48, 466 (1985).
2. Arnaud d'Avitaya, F., Perio, A., Oberlin, J.-C., Campidelli, Y., and Chroboczek, J.A., Appl. Phys. Lett. 54, 2198 (1989).
3. Duboz, J.Y., Badoz, P.-A., Arnaud d'Avitaya, F., and Chroboczek, J.A., Appl. Phys. Lett. 55, 84 (1989).
4. Janega, P.L., McCaffrey, J., and Landheer, D., Appl. Phys. Lett. 55, 1415 (1989).
5. Pahun, L., Campidelli, Y., Arnaud d'Avitaya, F., and Badoz, P.A., Appl. Phys. Lett. 60, 1166 (1992).
6. Auffret, S., Pierre, J., Lambert, B., Soubeyroux, J.L., and Chroboczek, J.A., Physica B 162, 271 (1990).
7. Duboz, J.Y., Badoz, P.-A., Perio, A., Oberlin, J.-C., Arnaud d'Avitaya, F., Campidelli, Y., and Chroboczek, J.A., Appl. Surf. Sci. 38, 171 (1989).
8. Unewisse, M.H. and Storey, J.W.V., J. Appl. Phys. 73, 3873 (1993).
9. Wetzel, P., Pirri, C., Paki, P., Bolmont, D., and Gewinner, G., Phys. Rev. B 47, 3677 (1993).
10. Stauffer, L., Mharchi, A., Pirri, C., Wetzel, P., Bolmont, D., Gewinner, G., and Minot, C., Phys. Rev. B 47, 10555 (1993).
11. Tuilier, M.H., Wetzel, P., Pirri, G., Bolmont, D., and Gewinner, G., Phys. Rev. B 50, 2333 (1994).
12. Tuilier, C., Wetzel, Pirri P., Gewinner, G., Veuillen, J.-Y., and Nguyen Tan, T.A., Surf. Sci. 307–309, 710 (1994).
13. van der Veen, J.F., Surf. Sci. Rep. 5, 199 (1985).
14. Feidenhans'l, R., Surf. Sci. Rep. 10, 105 (1989).
15. Robinson, I.K., Phys. Rev. B 33, 3830 (1986).
16. Mareé, P.M.J., de Jongh, A.P., Derks, J.W., and van der Veen, J.F., Nucl. Instr. Meth. B 28, 76 (1987).
17. Norris, C., Finney, M.S., Clark, G.F., Baker, G., Moore, R.R., and van Silfhout, R.G., Rev. Sci. Instr. 63, 1083 (1992).
18. Vlieg, E., van't Ent, A., de Jongh, A.P., Neerings, R., and van der Veen, J.F., Nucl. Instr. Meth. A 262, 522 (1987).
19. Forthe 1 × 1 unit cell, we use the following unit cell vectors: a1 = l/2[101] a2 = 1/2 [110] and a3 = [111]. In reciprocal space coordinates (hkl), h and k thus denote in-plane momentum transfers, whereas l denotes the out-of-plane momentum transfer.
20. Takayanagi, K., Tanishiro, Y., Takahashi, M., and Takahashi, S., Surf. Sci. 164, 367 (1985).
21. Vlieg, E., van der Veen, J.F., Gurman, S.J., Norris, C., and Macdonald, J.E., Surf. Sci. 210, 301 (1989).
22. Lohmeier, M., Huisman, W.J., ter Horst, G., Zagwijn, P., Nishiyama, A., Nickiin, C.L., Turner, T.S., and Vlieg, E., in preparation.

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