[Abstract list] [Previous] [Next] [Home]

Phys. Rev. Lett. 70 (1993) pp. 3099-3102

Magnetic splitting of image states at Fe(011)

M. Nekovee, S. Crampin and J.E. Inglesfield

Institute for Theoretical Physics, Catholic University of Nijmegen, Toernooiveld, NL-6525 ED Nijmegen, The Netherlands

Abstract
The exchange splitting of image-induced surface states on Fe(110)is calculated by spin-polarised near-surface embedding. The splitting is 55 meV for the n=1 state and is primarily a result of coupling to the spin-polarised substrate potential. The effect of the spin-polarised surface barrier is relatively small and of opposite sign to the substrate contribution. This surprising result is a direct consequence of the negative spin density fof surface electrons at the Fermi energy, illustrating the sensitivity of spin-split image states to surface magnetic properties.