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Spin-Resolved Photoemission Study of n = 2 Core Levels of Iron

Published online by Cambridge University Press:  03 September 2012

L.E. Klebanoff
Affiliation:
Lehigh University, Department of Chemistry and Zettlemoyer Center for Surface Studies, Sinclair Laboratory, 7 Asa Drive, Bethlehem, PA 18015
D.G. Van Campen
Affiliation:
Lehigh University, Department of Chemistry and Zettlemoyer Center for Surface Studies, Sinclair Laboratory, 7 Asa Drive, Bethlehem, PA 18015
R.J. Pouliot*
Affiliation:
Lehigh University, Department of Chemistry and Zettlemoyer Center for Surface Studies, Sinclair Laboratory, 7 Asa Drive, Bethlehem, PA 18015
*
* Author to whom correspondence should be addressed.
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Abstract

The first spin-resolved x-ray photoelectron spectroscopy (SRXPS) study of the n = 2 core levels of ferromagnetic Fe are reported. The 2p3/2, 2p1/2 and 2s core levels all display interesting spin-dependent structures and splittings. The spectral complexity predicted by a purely atomic picture is not observed in the data. The results indicate that theories incorporating the delocalization of the 3d valence band are more applicable to the description of core-level photoemission in iron.

Type
Research Article
Copyright
Copyright © Materials Research Society 1993

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References

1. Clemens, W., Vescovo, E., Kachel, T., Carbone, C. and Eberhardt, W., Phys. Rev. B 46, 4198 (1992).Google Scholar
2. Kamper, K.-P., Schmitt, W., and Guntherodt, G., Phys. Rev. B 42, 10696 (1990)Google Scholar
3. Johnson, P.D., Clarke, A., Brookes, N.B., Hulbert, S.L., Sinkovic, B. and Smith, N.V., Phys. Rev. Lett. 61, 2257 (1988).Google Scholar
4. Kisker, E., Schroder, K., Gudat, W. and Campagna, M. Phys. Rev. B 31, 329 (1985).Google Scholar
5. Hillebrecht, F.U., Jungblut, R. and Kisker, E., Phys. Rev. Lett., 65, 2450 (1990).Google Scholar
6. Sinkovic, B., Johnson, P.D., Brookes, N.B., Clarke, A. and Smith, N.V. Phys. Rev. Lett. 65, 1647 (1990).Google Scholar
7. Carbone, C., Kachel, T., Rochów, R. and Gudat, W. Sol. St. Commun. 77, 619 (1991)Google Scholar
8. Carbone, C., and Kisker, E., Sol. St. Commun. 65, 1107 (1988).Google Scholar
9. Baumgarten, L., Schneider, C.M., Petersen, H., Schäfers, F. and Kirschner, J., Phys. Rev. Lett. 65, 492 (1990).Google Scholar
10. Ebert, H., Baumgarten, L., Schneider, C.M. and Kirschner, J. Phys. Rev. B 44, 4406 (1991).Google Scholar
11. Tholeand, B.T., Van der Laan, G., Phys. Rev. B 44, 12424 (1991).Google Scholar
12. Allied Signal MetGlas Alloy # 2714A.Google Scholar
13. XPS analysis indicated an O/Fe stoichiometric ratio of 0.09. Assuming oxygen contamination exists as Fe2O3 [8], 6% of the Fe atoms exist as Fe. This oxidation produces very small peaks chemically shifted by 4.5 eV to higher binding energy in the Nt Fe 2p3/2, Fe 2p1/2 spectra.Google Scholar
14. Scheinfein, M.R., Pierce, D.T., Unguris, J., McClelland, J.J., Celotta, R.J., and Kelly, M.H., Rev. Sci. Inst. 60, 1 (1989).Google Scholar
15. Kessler, J., in Polarized Electron (Springer Verlag, Berlin, 1985), p. 234.Google Scholar
16. Count rates reflect the total photoelectric signal (peak + background).Google Scholar
17. The N↑ and N↓ spectra are calculated from the polarization P by the relations: Statistical error bars (± δN↑↓) shown in the figures are calculated via the expression Google Scholar
18. Doniach, S. and Sunjic, M., J. Phys. C: Sol. St. Phys. 3, 285 (1970).Google Scholar
19. The error indicates binding energy precision, not accuracy.Google Scholar
20. Bagus, P.S., Freeman, A.J. and Sasaki, F., Phys. Rev. Lett. 30, 850 (1973).Google Scholar
21. Cowan, R.D. in The Theory of Atomic Structure and Spectra (U. of California, Berkeley, 1981), p. 130.Google Scholar
22. Gupta, R.P. and Sen, S.K., Phys. Rev. B10, 71 (1974).Google Scholar
23. Kakehashi, Y., Phys. Rev. B. 32, 1607 (1985), and references therein.Google Scholar