Electronic structure of charge- and spin-controlled Sr1-(x+y)Lax+yTi1- xCrxO3

H. Iwasawa, K. Yamakawa, T. Saitoh, J. Inaba, Takuro Katsufuji, M. Higashiguchi, K. Shimada, H. Namatame, M. Taniguchi

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    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 languageEnglish
    JournalPhysical Review Letters
    Issue number6
    Publication statusPublished - 2006


    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    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). https://doi.org/10.1103/PhysRevLett.96.067203