Physical Review B · 2007 · 61 citations · 25 references
Natural SciencesMaterials SciencePhysicsMagnetic MaterialsMaterials ChemistrySpectroscopyFerromagnetic MaterialsFerromagnetismMagnetic Properties Of SolidsMagnetism In SolidsMagnetism Of Inorganic CompoundsSurface PhysicsCircular DichroismElectronic Structure AnalysisMagnetic Circular DichroismMagnetism Of Transition Metal ComplexesMagneto-electronic StructureSpectroscopic Characterization Of Metal-ligand BondsSpectroscopy Of Transition Metal ComplexesTemperature Dependence
In this work, the different coupling strengths of Fe-octaethylporphyrin molecules sublimated in situ onto epitaxially grown Co and Ni films on Cu(100) are studied by systematic x-ray-absorption and x-ray magnetic circular dichroism (XMCD) measurements. The fine structures observed in the absorption and dichroic spectra of the $\mathrm{Fe}\text{\ensuremath{-}}{L}_{2,3}$ edges are explained in terms of different $\mathrm{Fe}\phantom{\rule{0.2em}{0ex}}3d$ orbitals probed in angular-dependent measurements. The coverage of Fe-porphyrin molecules is varied from submonolayer to 1.5 ML (monolayer), and measurements were carried out at room as well as at low temperatures. From the temperature dependence of the Fe-XMCD signal, a weaker coupling strength between the Fe atom and the Ni substrate is found as compared to the Co case.
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X-ray circular dichroism as a probe of orbital magnetization
B. T. Thole, Paolo Carra, F. Sette et al. · Physical Review Letters · 1992 · 2.7K citations
X-ray circular dichroism and local magnetic fields
Paolo Carra, B. T. Thole, M. Altarelli et al. · Physical Review Letters · 1993 · 2.3K citations