Exploring small energy scales with x-ray absorption and dichroism

• Verfasst von: Praetorius, Christian Michael [VerfasserIn]
• Verfasst von: Haverkort, Maurits W. [VerfasserIn]
• Titel: Exploring small energy scales with x-ray absorption and dichroism
• Verf.angabe: C. Praetorius, M. Zinner, P. Hansmann, M.W. Haverkort, and K. Fauth
• Fussnoten: Gesehen am 20.09.2017
• Titel Quelle: Enthalten in: Physical review
• Jahr Quelle: 2016
• Band/Heft Quelle: 93(2016,16) Artikel-Nummer 165107, 5 Seiten
• ISSN Quelle: 2469-9969
• DOI: doi:10.1103/PhysRevB.93.165107
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1563676079

Abstract

Soft x-ray linear and circular dichroism (XLD, XMCD) experiments at the Ce M4,5 edges are being used to determine the energy scales characterizing the Ce 4f degrees of freedom in the ultrathin ordered surface intermetallic CeAgx/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 the temperature dependence of both linear and circular dichroism owing to their strong sensitivity for anisotropies in both charge distribution and paramagnetic response, respectively.