Abstract
The surface electronic structure of band ferromagnets in the vicinityof the Fermi level is strongly influenced by the magnetic d bands. Acomparative study of the closed-packed surfaces of Ni, Co, and Feshows that surface resonances dominate over surface states withincreasing d-band influence. Our theoretical analysis distinguishesbetween surface states and resonances thereby providing a systematicsof surface-related spectral features at ferromagnets. This solves thelong-standing “surface-state puzzle” in the literature of sometimescontradicting (inverse) photoemission results.
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