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

    Research output: Contribution to journalArticle

    15 Citations (Scopus)

    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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    electronic structure
    photoelectric emission
    energy levels
    charge transfer
    high resolution
    configurations
    spectroscopy
    ions
    energy

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Electronic structure of charge- and spin-controlled Sr1-(x+y)Lax+yTi1- xCrxO3. / Iwasawa, H.; Yamakawa, K.; Saitoh, T.; Inaba, J.; Katsufuji, Takuro; Higashiguchi, M.; Shimada, K.; Namatame, H.; Taniguchi, M.

    In: Physical Review Letters, Vol. 96, No. 6, 2006.

    Research output: Contribution to journalArticle

    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, vol. 96, no. 6. https://doi.org/10.1103/PhysRevLett.96.067203
    Iwasawa, H. ; Yamakawa, K. ; Saitoh, T. ; Inaba, J. ; Katsufuji, Takuro ; Higashiguchi, M. ; Shimada, K. ; Namatame, H. ; Taniguchi, M. / Electronic structure of charge- and spin-controlled Sr1-(x+y)Lax+yTi1- xCrxO3. In: Physical Review Letters. 2006 ; Vol. 96, No. 6.
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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.",
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    AU - Iwasawa, H.

    AU - Yamakawa, K.

    AU - Saitoh, T.

    AU - Inaba, J.

    AU - Katsufuji, Takuro

    AU - Higashiguchi, M.

    AU - Shimada, K.

    AU - Namatame, H.

    AU - Taniguchi, M.

    PY - 2006

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    AB - 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.

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