Physics – Condensed Matter – Materials Science
Scientific paper
2004-06-11
Physics
Condensed Matter
Materials Science
8 pages, 6 figures, accepted for publication in Physical Review B
Scientific paper
10.1103/PhysRevB.70.064402
Cr 2p core excited XAS and XMCD spectra of ferromagnetic Cr$_{1-\delta}$Te with several concentrations of $\delta$=0.11-0.33 and ferrimagnetic Cr$_{5}$S$_{6}$ have been measured. The observed XMCD lineshapes are found to very weakly depend on $\delta$ for Cr$_{1-\delta}$Te. The experimental results are analyzed by means of a configuration-interaction cluster model calculation with consideration of hybridization and electron correlation effects. The obtained values of the spin magnetic moment by the cluster model analyses are in agreement with the results of the band structure calculation.The calculated result shows that the doped holes created by the Cr deficiency exist mainly in the Te 5porbital of Cr$_{1-\delta}$Te, whereas the holes are likely to be in Cr 3d state for Cr$_{5}$S$_{6}$.
Hirai C.
Imada Shin
Kimura Akio
Koyama Masanori
Muro Takayuki
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