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Concentration-Dependent Surface-State Shifts: Au on Cu(001)

Published online by Cambridge University Press:  15 February 2011

J. C. Hansen
Affiliation:
Eastman Kodak Research, Rochester, NY
M. K. Wagner
Affiliation:
Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706
J. G. Tobin
Affiliation:
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, CA 94550
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Abstract

High-resolution angle-resolved photoemission has been used to investigate the behavior of the Cu(001) surface state as a function of Au coverage and substrate temperature. Binding-energy shifts of this state are dependent on the concentration of Au atoms substituted into the top surface layer of the Cu(001) substrate. The results demonstrate the use of surfacelocalized Tamm states as a specific probe of the chemical environment in the surface plane.

Type
Research Article
Copyright
Copyright © Materials Research Society 1991

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References

1. Barton, J. J., Bahr, C. C., Robey, S. W., Hussain, Z., Umbach, E. and Shirley, D. A., Phys. Rev. B 34, 3807 (1986).Google Scholar
2. Salmeron, M., Ferrer, S., Jazzar, M., and Somorjai, G., Phys. Rev. B 28, 1158 and 6758 (1983).Google Scholar
3. Hansen, J. C. and Tobin, J. G., J. Vac. Sci. Technol. A May/June (1989).Google Scholar
4. Hsieh, T. C., Miller, T., and Chiang, T.-C., Phys. Rev. B 33, 2865 (1986). T. Miller, Private communications, 1989.CrossRefGoogle Scholar
5. Jordan, R. G. and Durham, P. J., to be published in Proc. NATO ASI on “Alloy Phase Stability,” Crete, 13–27 June, 1987.Google Scholar
6. Goodwin, E. T., Proc. Cambridge Philos. Soc. 35, 221 (1939).CrossRefGoogle Scholar
7. Asonen, H., Barnes, C. J., Pessa, M., Rao, R. S. and Bansil, A., Phys. Rev. B 31, 3245 (1985).Google Scholar
8. Graham, G. W., Surf. Sci. 184, 137 (1987).Google Scholar
9. Hansen, J. C., Benson, J. A., Clendening, W. D., McEllistrem, M. T. and Tobin, J. G., Phys. Rev. B 36, 6186 (1987).Google Scholar
10. Palmberg, P. W. and Rhodin, T. N., J. Chem. Phys. 49, 134 and 147 (1968).Google Scholar
11. Hansen, J. C., Wagner, M. K., and Tobin, J. G., Solid State Commun. 72, 319 (1989); J. G. Tobin, J. C. Hansen, and M. K. Wagner, J. Vac. Sci. Tech. A8 2494 (1990).CrossRefGoogle Scholar
12. Wei, C. M. and Tong, S. Y., Private Communications. Wei, C. M., Hansen, J. C., Wagner, M. K., Machado, R., Harvey, R. P., Tobin, J. G., and Tong, S. Y., Bull. APS 34, 446 (1989).Google Scholar
13. Wang, Z. O., Li, Y. S., Lok, C. K. C., Quinn, J., Jona, F. and Marcus, P. M., Solid State Commun. 2, 181 (1987).Google Scholar
14. Knapp, B. J., Hansen, J. C., Benson, J. A., and Tobin, J. G., Surf. Sci. 188, L675 (1987).Google Scholar
15. Graham, G. W., Surf. Sci. 171, L432 (1986).Google Scholar
16. Kevan, S.D., Stoffel, N. G., and Smith, N. V., Phys. Rev. B31, 3348 (1985); Phys. Rev., 4956 (1985).Google Scholar
17. Heimann, P., Hermanson, J., Miosga, H., and Neddermeyer, H., Phys. Rev. B 42, 1789 (1979).Google Scholar
18. Euceda, A., Bylander, D. M., Kleinman, L., and Mednick, K., Phys. Rev. B 31, 3245 (1985).Google Scholar
19. The c(2×2) Au/Cu(001) spectrum of Reference 8 (figure 20, p. 156) when plotted versus the measured Fermi edge yields a value of BF = 1.5 eV in good agreement with figure 2 of this work, BF = 1.47 eV.Google Scholar