Anisotropy of the GaAs(001)-β2(2×4) surface from high-resolution electron energy loss spectroscopy

Physical Review B - Condensed Matter and Materials Physics

Volumn 67, Issue 11, 2003, Pages 1153321-1153325

  Balzarotti, A ^a   Placidi, E ^a   Arciprete, F ^a   Fanfoni, M ^a   Patella, F ^a  

^a UNIVERSITY OF ROME TOR VERGATA   (Italy)

Author keywords

[No Author keywords available]

Indexed keywords

ARSENIC; GALLIUM;

ANISOTROPY; ARTICLE; CHEMICAL MODIFICATION; CLINICAL FEATURE; ELECTRON TRANSPORT; ENERGY TRANSFER; IMAGE RECONSTRUCTION; MEASUREMENT; OPTICAL RESOLUTION; OXYGEN TRANSPORT; PHASE TRANSITION; QUALITY CONTROL; REFLECTOMETRY; STRUCTURE ANALYSIS; SURFACE PROPERTY;

EID: 0038218053     PISSN: 01631829     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (26)

1. A. Balzarotti, F. Arciprete, M. Fanfoni, F. Patella, E. Placidi, G. Onida, and R. Del Sole, Surf. Sci. Lett. 524, L71 (2003).
2. H. Ibach and D. L. Mills, in Electron Energy Loss Spectroscopy and Surface Vibrations (Academic, New York, 1982).
3. S. Nannarone, S. D'Addato, J.A. Schaefer, Yu Chen, and G.J. Lapeyre, Phys. Rev. B 39, 5975 (1989).
4. U. Del Pennino, M.G. Betti, and C. Mariani, Surf. Sci. 207, 133 (1988).
5. R. Eryigit and I.P. Herman, Phys. Rev. B 56, 9263 (1997).
6. M. Murayama, K. Shiraishi, and Y.T. Nakayama, Jpn. J. Appl. Phys., Part I 37, 4109 (1998).
7. A.I. Shkrebtii et al., Phys. Rev. Lett. 81, 721 (1998).
8. K. Uwai and N. Kobayashi, Phys. Rev. Lett. 78, 959 (1997).
9. W.G. Schmidt, F. Bechstedt, K. Fleischer, C. Cobet, N. Esser, W. Richter, J. Bernholc, and G. Onida, Phys. Status Solidi A 188, 1401 (2001).
10. V.L. Berkovits, P. Chiaradia, D. Paget, A.B. Gordeeva, and C. Goletti, Surf. Sci. 441, 2632 (1999).
11. N. Esser et al., J. Vac. Sci. Technol. B 13, 1666 (1995).
12. M. Wassermeier, J. Behrend, K.H. Ploog, J.T. Zettler, K. Stahrenberg, and W. Richter, Phys. Rev. B 53, 13 542 (1996).
13. L.F. Lastras-Martinez, D. Rönnow, P.V. Santos, M. Cardona, and K. Eberl, Phys. Rev. B 64, 245303 (2001).
14. D. Paget, C. Hogan, V. L. Berkovits, O. E. Tereshchenko (unpublished). For details on the method of calculation, see also Ref. 1.
15. A.R. Avery, D.M. Holmes, T.S. Jones, B.A. Joyce, and G.A. Briggs, Phys. Rev. B 50, 8098 (1994).
16. F. Arciprete, S. Colonna, M. Fanfoni, F. Patella, and A. Balzarotti, Phys. Rev. B 53, 12 948 (1996).
17. M. Fanfoni, F. Arciprete, F. Patella, A. Sgarlata, N. Motta, and A. Balzarotti, Surf. Sci. 419, 24 (1998).
18. A.R. Avery, D.M. Holmes, J. Sudijono, T.S. Jones, and B.A. Joyce, Surf. Sci. 323, 91 (1995).
19. The anisotropic diffuse scattering (background) is large on decapped surfaces but it is also present (though smaller) on nonoptimized MBE-grown surfaces. The intensity of the elastic peak (and of its tail) was systematically higher in the [110] azimuth.
20. D.L. Mills, Surf. Sci. 48, 59 (1975).
21. A. Selloni, and R. Del Sole, Surf. Sci. 168, 35 (1986).
22. Faint structures below 3 eV have been indeed calculated (Ref. 9) and measured (Ref. 12) on MBE-grown samples. They are either strongly weakened (Ref. 11) or missing (Refs. 7,10,23) in Asdecapped surfaces. We have taken near-normal RAS spectra together with EELS spectra on as-grown MBE surfaces that will be published elsewhere.
23. M.J. Begarney, L. Li, C.H. Li, D.C. Law, Q. Fu, and R.F. Hicks, Phys. Rev. B 62, 8092 (2000).
24. W.G. Schmidt and F. Bechstedt, Phys. Rev. B 54, 16 742 (1996).
25. See, e.g., S. De Giorgio, thesis, University of Roma "Tor Vergata" (2000), unpublished.
26. -1, respectively. Comparable decay constants are obtained for the [110] spectrum.