Abstract
The electronic structure and ionization energy for the system Ba/Si(100)2×1 have been studied as functions of the submonolayer coverage. It is found that there is an energy gap in the surface states spectrum and that the Ba/Si(100)2×1 interface is semiconducting up to 1.5 monolayers of Ba. Two surface bands induced by Ba adsorption have been detected. The evolution of the spectrum with increasing degree of Ba coverage points to the existence of two nonequivalent “adsorption sites,” which differ in binding energy by 0.11 eV. The development of the Ba-induced bands is found to terminate at a coverage corresponding to the minimum ionization energy and close to one monolayer. The adsorption bond is shown to have a primarily covalent character.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
G. V. Benemanskaya, D. V. Daineka, and G. E. Frank-Kamenetskaya, Phys. Low-Dim. Struct. 10/11, 233 (1995).
K. O. Magnusson, S. Wiklund, R. Dudde, et al., Phys. Rev. B 44, 5657 (1991).
G. V. Benemanskaya, G. E. Frank-Kamenetskaya, and M. N. Lapushkin, Surf. Sci. 331–333, 552 (1995).
W. Monch, Semiconductor Surfaces and Interfaces, Springer-Verlag, Berlin (1993).
J. Pollmann, P. Kruger, and A. Mazur, J. Vac. Sci. Technol. B 5, 945 (1987).
L. S. O. Johansson, R. I. G. Uhrberg, P. Vartensson et al., Phys. Rev. B 42, 1305 (1990).
D. Vlachos, M. Kamaratos, and C. Papageorgopoulos, Solid State Commun. 90, 175 (1994).
F. Ishizaka and Y. Shiraki, J. Electrochem. Soc. 133, 666 (1986).
A. G. Fedorus, A. G. Naumovets, and Yu. S. Vedula, Phys. Solid State 13, 445 (1972).
G. V. Benemanskaya, M. N. Lapushkin, and M. I. Urbakh, Zh. Éksp. Teor. Fiz. 102, 1664 (1992) [Sov. Phys. JETP 75, 899 (1992)].
G. V. Benemanskaya, D. V. Daineka, and G. É. Frank-Kamenetskaya, JETP Lett. 65, 729 (1997).
Ye Ling, A. J. Freeman, and B. Delley, Phys. Rev. B 39, 10144 (1989).
R. Ramirez, Phys. Rev. B 40, 3962 (1989).
J. D. Levine, Surf. Sci. 34, 90 (1973).
C. M. Wei, H. Huang, S. Y. Tong et al., Phys. Rev. B 42, 11284 (1990).
P. Soukiassian, L. Spiess, P. S. Mangat et al., J. Vac. Sci. Technol. B 11, 1431 (1993).
T. Abukawa and S. Kono, Phys. Rev. B 37, 9097 (1988); Surf. Sci. 214, 141 (1989).
A. J. Smith, W. R. Graham, and E. W. Plummer, Surf. Sci. 243, L37 (1991).
T. Abukawa, T. Kashiwakura, T. Okane et al., Surf. Sci. 303, 146 (1994).
Y.-C. Chao, L. S. O. Johansson, C. J. Karlsson et al., Phys. Rev. B 52, 2579 (1995).
I. P. Batra, Phys. Rev. B 39, 3919 (1989); 43, 12322 (1991).
H. Ishida and K. Terakura, Phys. Rev. B 40, 11519 (1989).
G. V. Benemanskaya, D. V. Daineka, and G. E. Frank-Kamenetskaya, Surf. Rev. Lett. 5, No. 1–2 (1998).
Author information
Authors and Affiliations
Additional information
Zh. Éksp. Teor. Fiz. 114, 2145–2152 (December 1998)
Rights and permissions
About this article
Cite this article
Benemanskaya, G.V., Daineka, D.V. & Frank-Kamenetskaya, G.É. Electronic structure and local interactions on a S(100) 2×1 surface with submonolayer Ba overlayers. J. Exp. Theor. Phys. 87, 1167–1171 (1998). https://doi.org/10.1134/1.558608
Received:
Issue Date:
DOI: https://doi.org/10.1134/1.558608