Independent control of charge and spin density in Sr1 - (x + y) Lax + y Ti1 - x Crx O3 probed by photoemission spectroscopy

S. Kaneyoshi, H. Iwasawa, T. Saitoh, Y. Aiura, D. Satoh, Takuro Katsufuji, I. Hase, M. Higashiguchi, K. Shimada, H. Namatame, M. Taniguchi, M. Kubota, K. Ono

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    Using photoemission (PES) spectroscopy and a first-principles band-structure calculation, we have investigated the electronic structure of perovskite-type Ti-Cr oxides Sr1 - (x + y) Lax + y Ti1 - x Crx O3, in which the charge and spin density can be controlled. It was found that the near-Fermi level (EF) electronic structure consisted of a Cr 3d localized state and a Ti 3d itinerant state that were well separated in energy. The spectral weight of the Cr 3d state was proportional to x, demonstrating a controllable spin density. In contrast, the near-EF spectral weight exhibited different behavior. The band theory has reproduced the essential features of the Cr and Ti 3d states as well as the O 2p ones, but failed to predict the location of the Cr 3d and O 2p states. Implications of this discrepancy have been discussed in connection with calculated magnetic moments.

    Original languageEnglish
    JournalJournal of Magnetism and Magnetic Materials
    Volume310
    Issue number2 SUPPL. PART 2
    DOIs
    Publication statusPublished - 2007 Mar

    Fingerprint

    Photoelectron spectroscopy
    Electronic structure
    photoelectric emission
    electronic structure
    Magnetic moments
    Fermi level
    Band structure
    Perovskite
    Oxides
    spectroscopy
    magnetic moments
    oxides
    energy
    perovskite

    Keywords

    • Electronic structure
    • Photoemission spectroscopy
    • SrTiO

    ASJC Scopus subject areas

    • Condensed Matter Physics

    Cite this

    Independent control of charge and spin density in Sr1 - (x + y) Lax + y Ti1 - x Crx O3 probed by photoemission spectroscopy. / Kaneyoshi, S.; Iwasawa, H.; Saitoh, T.; Aiura, Y.; Satoh, D.; Katsufuji, Takuro; Hase, I.; Higashiguchi, M.; Shimada, K.; Namatame, H.; Taniguchi, M.; Kubota, M.; Ono, K.

    In: Journal of Magnetism and Magnetic Materials, Vol. 310, No. 2 SUPPL. PART 2, 03.2007.

    Research output: Contribution to journalArticle

    Kaneyoshi, S, Iwasawa, H, Saitoh, T, Aiura, Y, Satoh, D, Katsufuji, T, Hase, I, Higashiguchi, M, Shimada, K, Namatame, H, Taniguchi, M, Kubota, M & Ono, K 2007, 'Independent control of charge and spin density in Sr1 - (x + y) Lax + y Ti1 - x Crx O3 probed by photoemission spectroscopy', Journal of Magnetism and Magnetic Materials, vol. 310, no. 2 SUPPL. PART 2. https://doi.org/10.1016/j.jmmm.2006.10.400
    Kaneyoshi, S. ; Iwasawa, H. ; Saitoh, T. ; Aiura, Y. ; Satoh, D. ; Katsufuji, Takuro ; Hase, I. ; Higashiguchi, M. ; Shimada, K. ; Namatame, H. ; Taniguchi, M. ; Kubota, M. ; Ono, K. / Independent control of charge and spin density in Sr1 - (x + y) Lax + y Ti1 - x Crx O3 probed by photoemission spectroscopy. In: Journal of Magnetism and Magnetic Materials. 2007 ; Vol. 310, No. 2 SUPPL. PART 2.
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    abstract = "Using photoemission (PES) spectroscopy and a first-principles band-structure calculation, we have investigated the electronic structure of perovskite-type Ti-Cr oxides Sr1 - (x + y) Lax + y Ti1 - x Crx O3, in which the charge and spin density can be controlled. It was found that the near-Fermi level (EF) electronic structure consisted of a Cr 3d localized state and a Ti 3d itinerant state that were well separated in energy. The spectral weight of the Cr 3d state was proportional to x, demonstrating a controllable spin density. In contrast, the near-EF spectral weight exhibited different behavior. The band theory has reproduced the essential features of the Cr and Ti 3d states as well as the O 2p ones, but failed to predict the location of the Cr 3d and O 2p states. Implications of this discrepancy have been discussed in connection with calculated magnetic moments.",
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    AU - Kaneyoshi, S.

    AU - Iwasawa, H.

    AU - Saitoh, T.

    AU - Aiura, Y.

    AU - Satoh, D.

    AU - Katsufuji, Takuro

    AU - Hase, I.

    AU - Higashiguchi, M.

    AU - Shimada, K.

    AU - Namatame, H.

    AU - Taniguchi, M.

    AU - Kubota, M.

    AU - Ono, K.

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    N2 - Using photoemission (PES) spectroscopy and a first-principles band-structure calculation, we have investigated the electronic structure of perovskite-type Ti-Cr oxides Sr1 - (x + y) Lax + y Ti1 - x Crx O3, in which the charge and spin density can be controlled. It was found that the near-Fermi level (EF) electronic structure consisted of a Cr 3d localized state and a Ti 3d itinerant state that were well separated in energy. The spectral weight of the Cr 3d state was proportional to x, demonstrating a controllable spin density. In contrast, the near-EF spectral weight exhibited different behavior. The band theory has reproduced the essential features of the Cr and Ti 3d states as well as the O 2p ones, but failed to predict the location of the Cr 3d and O 2p states. Implications of this discrepancy have been discussed in connection with calculated magnetic moments.

    AB - Using photoemission (PES) spectroscopy and a first-principles band-structure calculation, we have investigated the electronic structure of perovskite-type Ti-Cr oxides Sr1 - (x + y) Lax + y Ti1 - x Crx O3, in which the charge and spin density can be controlled. It was found that the near-Fermi level (EF) electronic structure consisted of a Cr 3d localized state and a Ti 3d itinerant state that were well separated in energy. The spectral weight of the Cr 3d state was proportional to x, demonstrating a controllable spin density. In contrast, the near-EF spectral weight exhibited different behavior. The band theory has reproduced the essential features of the Cr and Ti 3d states as well as the O 2p ones, but failed to predict the location of the Cr 3d and O 2p states. Implications of this discrepancy have been discussed in connection with calculated magnetic moments.

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    KW - Photoemission spectroscopy

    KW - SrTiO

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