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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    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 languageEnglish
    JournalPhysical Review Letters
    Volume96
    Issue number6
    DOIs
    Publication statusPublished - 2006

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    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