Abstract
We present the electronic structure of investigated by high-resolution photoemission spectroscopy. In the vicinity of the Fermi level, it was found that the electronic structure was composed of a Cr local state with the configuration and a Ti itinerant state. The energy levels of these Cr and Ti states are well interpreted by the difference of the charge-transfer energy of both ions. The spectral weight of the Cr state is completely proportional to the spin concentration irrespective of the carrier concentration , indicating that the spin density can be controlled by as desired. In contrast, the spectral weight of the Ti state is not proportional to , depending on the amount of Cr doping.
- Received 30 August 2005
DOI:https://doi.org/10.1103/PhysRevLett.96.067203
©2006 American Physical Society