Electronic Structure Of The Dilute Magnetic Semiconductor Zn0.90mn0.10s Obtained By Soft X-Ray Spectroscopy And First-Principles Calculations

Soft x-ray emission and absorption spectra of the Mn L-2,L-3-edge were obtained from the diluted magnetic semiconductor Zn0.90Mn0.10S, and interpreted with the aid of first-principles computations of the densities of states. The calculations reveal that the Mn d states near the Fermi energy show interesting spin polarization, and are strongly hybridized with the neighboring S atoms, indicative of the sp-d hybridization typical of dilute magnetic semiconductors. Resonant inelastic x-ray measurements reveal a 3-eV inelastic energy loss, which is interpreted as a transition from the Mn valence-band d states to a spin-flip multiplet of the 3d(5) ground-state configuration, while a 6-eV loss is attributed to observed charge-transfer effects caused by hybridization between the S p states and the occupied Mn d states located a few eV below the Fermi energy.