Photoemission Study of the Initial Growth of Co on Ru(0001)

• Authors: P. Godowski , J. Onsgaard , M. Trzebiatowska-Gusowska , K. Pater , Zhe Li
• Languages of publication: EN

Abstracts

EN

The growth process of cobalt on Ru(0001) was characterized by photoelectron spectroscopy excited by X-ray and synchrotron radiation. The binding energy position and intensity of the Co 2p_{3/2} and Ru 3d_{5/2} core levels as well as the shape and structure of the valence band spectra corresponding to the different stages of the deposition were investigated. An observed small positive binding energy shift is a consequence of an increase in the cobalt adatoms coordination number. The core-level shift between bulk and surface Ru atoms is determined as -360 meV. Upon adsorption of cobalt, the interface peak appears with a shift of -(70÷80) meV relative to the bulk one. On the basis of unchanged energy positions and widths of the Ru-derived features of the valence band spectra, a weak interaction between cobalt and substrate is suggested. The measured valence band could be reproduced by superimposing the spectra of the pure elements.

Keywords

EN

79.60.Dp; 79.60.Jv; 68.55.Jk

Discipline

• 79.60.Dp: Adsorbed layers and thin films
• 79.60.Jv: Interfaces; heterostructures; nanostructures

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2007
• Volume: 111
• Issue: 2
• Pages: 263-271

Dates

published

2007-02

received

2007-02-06

Contributors

author

P. Godowski

• Institute of Experimental Physics, University of Wrocław, pl. Maxa Borna 9, 50-204 Wrocław, Poland

author

J. Onsgaard

• Department of Physics and Nanotechnology, Aalborg University, 9220 Aalborg East, Denmark

author

M. Trzebiatowska-Gusowska

• Institute of Low Temperature and Structure Research, P.A.S., P Nr 1410, 50-950 Wrocław 2, Poland

author

K. Pater

• Institute of Physics, University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

author

Zhe Li

• Institute of Storage Ring Facilities, University of Aarhus, 8000 Aarhus, Denmark

References

• 1. H.W. van Kesteren, F.J.A. den Broeder, P.J.H. Bloemen, E.A.M. van Alphen, W.J.M. de Jonge, J. Magn. Magn. Mater., 102, L9, 1992
• 2. R.Q. Hwang, C. Gunther, J. Schroder, S. Gunther, E. Kopatzki, R.J. Behm, J. Vac. Sci. Technol. A, 10, 1970, 1992
• 3. C. Liu, S.D. Bader, J. Magn. Magn. Mater., 119, 81, 1993
• 4. http://www.webelements.com/
• 5. I. Daruka, A.-L. Barabási, Phys. Rev. Lett., 79, 3708, 1997
• 6. A.K. Schmid, J.C. Hamilton, N.C. Bartelt, R.Q. Hwang, Phys. Rev. Lett., 77, 2977, 1996
• 7. F. El Gabaly, S. Gallego, C. Munoz, L. Szunyogh, P. Weinberger, C. Klein, A.K. Schmid, K.F. McCarty, J. de la Figuera, Phys. Rev. Lett., 96, 147202, 2006
• 8. T.H. Andersen, L. Bech, Z.S. Li, S.V. Hoffmann, J. Onsgaard, Surf. Sci., 559, 111, 2004
• 9. S. Valeri, A. Borghi, G.C. Gazzadi, A. di Bona, Surf. Sci., 423, 346, 1999
• 10. Landolt-Bornstein - Group III Condensed Matter, Vol. 24b, Springer-Verlag, Berlin 1994
• 11. S. Lizzit, A. Baraldi, A. Groso, K. Reuter, M.V. Ganduglia-Pirovano, C. Stampfl, M. Scheffler, M. Stichler, C. Keller, W. Wurth, D. Menzel, Phys. Rev. B, 63, 205419, 2001
• 12. P.J. Godowski, J. Onsgaard, M. Trzebiatowska-Gusowska, K. Pater, Z.S. Li, Phys. Rev. B, 73, 193403, 2006
• 13. M. Lindroos, P. Hofmann, D. Menzel, Phys. Rev. B, 33, 6798, 1986
• 14. T. Pelzer, G. Ceballos, F. Zbikowski, B. Willerding, K. Wandelt, U. Thomann, Ch. Reuss, Th. Fauster, J. Braun, J. Phys., Condens. Matter, 12, 2193, 2000
• 15. P. Heimann, E. Marschall, H. Neddermeyer, M. Pessa, H.F. Roloff, Phys. Rev. B, 16, 2575, 1977
• 16. F.J. Himpsel, D.E. Eastman, Phys. Rev. B, 21, 3207, 1980

Identifiers

DOI

10.12693/APhysPolA.111.263