Exploring small energy scales with x-ray absorption and dichroism

Abstract

Soft x-ray linear and circular dichroism (XLD, XMCD) experiments at the Ce M${}_{4,5}$ edges are being used to determine the energy scales characterizing the Ce $4f$ degrees of freedom in the ultrathin ordered surface intermetallic CeAg${}_x$/Ag(111). We find that all relevant interactions, i. e. Kondo scattering, crystal field splitting and magnetic exchange coupling occur on small scales. Our study demonstrates the usefulness of combining x-ray absorption experiments probing linear and circular dichroism owing to their strong sensitivity for anisotropies in both charge distribution and paramagnetic response, respectively.

arXiv comment5 pages, 4 figures

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Cited by in corpus (2)

• Kondo screening and beyond: an x-ray absorption and dichroism study of CePt${}_5$/Pt(111)
• Study of crystal-field splitting in ultrathin CePt${}_5$ layers by Raman spectroscopy