Journal
PHYSICAL REVIEW B
Volume 80, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.80.020406
Keywords
aluminium alloys; chromium alloys; cobalt alloys; electronic density of states; Fermi level; ferromagnetic materials; iron alloys; magnetic circular dichroism; magnetic epitaxial layers; manganese alloys; metallic epitaxial layers; silicon alloys; X-ray absorption spectra
Funding
- DFG [FOR 559]
- BMBF [ES3XBA/5]
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We investigate the electronic properties of epitaxial Co-2(FexMn1-x)Si, Co2Fe(Al1-xSix), and Co-2(Cr0.6Fe0.4)Al films on MgO(100) substrates using circular dichroism in x-ray absorption spectroscopy (XMCD). Considering final-state electron correlations, the spin-resolved partial density of states at the Co atom can be extracted from XMCD data. The experimental results corroborate the predicted half-metallic ferromagnetic properties of these alloys and reveal a compositional dependence of the Fermi energy position within the minority band gap.
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