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Influence of steps on quantum well states in Cu/Co(100) multilayers
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16.Note that on the stepped surface the quantum well states are strongest with electrons incident along the  terrace normal, and not along the normal of the average surface. Strictly speaking, that should only be true in the absence of refraction of the electrons at the surface. With our experimental parameters this happens coincidently. Taking conservation properly into account, one finds at an incident energy of 11.5 eV above and at 10° off normal This nearly coincides with the of the bulk s,p band, if we take it near the Fermi level crossing along the  direction, i.e.,
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