Soft X-ray magnetic circular dichroism study of the ferromagnetic Cr${}_{1-\delta }$Te

Abstract

The 2p core excited XAS and XMCD spectra of Cr${}_{1-\delta }$Te with several concentrations of $\delta$=0.11-0.33 have been measured. The observed XMCD lineshapes are found to very weakly depend on $\delta$. The experimental results are analyzed in terms of the configuration-interaction picture with consideration of hybridization and electron correlation effects. The calculated result shows that CrTe can be classified into a charge transfer type material and created holes preferably exist in Te 5p orbitals in Cr deficient materials Cr${}_{1-\delta }$Te, which are in consistence with the observed XMCD feature and the reported band structure calculation.

REVTeX, 8 pages & 6 figures, submitted to Phys. Rev. B