Abstract
In spin-resolved electron spectroscopies at surfaces that do not contain an easy axis of bulk magnetization, the detection of spin effects can be hindered by closure domains. This is demonstrated by combining the magneto-optical Kerr effect and spin-resolved inverse photoemission (IPE) using Ni(001) as an example. On a Ni(001) surface with high remanent magnetization, spin-resolved IPE reveals a spin splitting of (80\ifmmode\pm\else\textpm\fi{}20) meV for transitions between bulk sp bands. The discrepancy in recent spectroscopic data regarding the splitting of Ni sp bands is explained by closure domains.
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