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Theoretical Studies of Spin Dependent Scatterings of Electrons from Ferromagnetic Surfaces and Ultra Thin Films

  • A. Ormeci (a1), M. P. Gokhale (a1), Burl M. Hall (a1) and D. L. Mills (a1)

Abstract

We summarize results of our recent theoretical studies of spin dependent scattering of electrons from ferromagnetic surfaces. We obtain an excellent account of both the energy and angle variation of the exchange asymmetry reported by Waller and Gradmann in their SPLEED study of the Fe(110) surface, and of spin dependent asymmetries in the transmission of photoelectrons through an ultra thin film of Fe on Cu(100). Potentials supplied by Fu and Freeman enable us to account for the data, with use of ground state potentials generated by ab initio methods.

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1. Feder, R., Chapter 4 in Polarized Electrons in Surface Physics, edited by Feder, R. (World Scientific, Singapore, 1985)
2. Fu, C. L. and Freeman, A. J., J. Magn. Mater. 69, LI (1987). Each Fe atom is represented by the potential in the mid plane of their model slab, with the effect of surface moments simulated as described in the text.
3. Ormeci, Alim, Hall, Burl M. and Mills, D. L., Phys. Rev. B42. 4524 (1990).
4. Waller, G. and Gradmann, U., Phys. Rev. B26. 6330 (1982); G. Waller, Ph.D. Thesis, Universitét Clausthal, 1986 (unpublished).
5. Tamura, E., Feder, R., Waller, G. and Gradmann, U., Physics Status Solidi (b) 151, 627 (1990).
6. Ormeci, Alim, Hall, Burl M. and Mills, D. L., Phys. Rev. B (to be published).
7. Hopster, H., private communication.
8. Pappas, D. et al. , Phys. Rev. Letters 66 504 (1991).
9. Gokhale, M. and Mills, D. L., Phys. Rev. Letters (to be published).

Theoretical Studies of Spin Dependent Scatterings of Electrons from Ferromagnetic Surfaces and Ultra Thin Films

  • A. Ormeci (a1), M. P. Gokhale (a1), Burl M. Hall (a1) and D. L. Mills (a1)

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