Abstract
An angle-resolved photoelectron spectroscopy (ARPES) study of the Cr(001) 3s core level is reported. The relative intensities of the exchange-split photoelectron components change as the ARPES spectra become more surface sensitive. Surface contamination suppresses these intensity variations, and decreases the energy width of the 3s spectral profile. Almost all of the spectral observations are consistent with a surface-sensitive enhancement of the atomic 3d spin at the Cr(001) surface.
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