Abstract
We present the electronic structure of Sr1-(x+y)Lax+yTi1-xCrxO3 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 3d local state with the t2g3 configuration and a Ti 3d itinerant state. The energy levels of these Cr and Ti 3d states are well interpreted by the difference of the charge-transfer energy of both ions. The spectral weight of the Cr 3d state is completely proportional to the spin concentration x irrespective of the carrier concentration y, indicating that the spin density can be controlled by x as desired. In contrast, the spectral weight of the Ti 3d state is not proportional to y, depending on the amount of Cr doping.
| Original language | English |
|---|---|
| Article number | 067203 |
| Journal | Physical Review Letters |
| Volume | 96 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2006 Jan 1 |
ASJC Scopus subject areas
- Physics and Astronomy(all)
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Iwasawa, H., Yamakawa, K., Saitoh, T., Inaba, J., Katsufuji, T., Higashiguchi, M., Shimada, K., Namatame, H., & Taniguchi, M. (2006). Electronic structure of charge- and spin-controlled Sr1-(x+y)Lax+yTi1- xCrxO3. Physical Review Letters, 96(6), [067203]. https://doi.org/10.1103/PhysRevLett.96.067203