Electronic structure analysis of Mn- and Fe-codoped In 2O 3 by photoemission yield measurements

Daisuke Yamashita, Tsuyoshi Yoshioka, So Nishida, Tomoyuki Yamamoto

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    The valence band electronic structures of Mn- and/or Fe-doped In 2O 3, i.e., In 2O 3:Mn, In 2O 3:Fe, and In 2O 3:(Mn, Fe), are investigated by photoemission yield measurements. Significant changes are observed in the threshold energy of photoemission, depending on the doped magnetic ions, which indicates that an additional occupied band appears above the top of the valence band of In 2O 3 owing to doping with Mn and/or Fe ions. It is confirmed that the order of the threshold energies of photoemission, E PET, is E PET(In 2O 3:Mn)<E PET(In 2O 3:(Mn, Fe))<E PET(In 2O 3:Fe)<E PET(In 2O 3). To gain a better understanding of these results, first-principles molecular orbital calculations are also carried out, which successfully explain the observed changes in the photoemission threshold energies.

    Original languageEnglish
    Pages (from-to)4485-4488
    Number of pages4
    JournalPhysica B: Condensed Matter
    Volume407
    Issue number22
    DOIs
    Publication statusPublished - 2012 Nov 15

    Fingerprint

    Photoemission
    Electronic structure
    photoelectric emission
    electronic structure
    Valence bands
    thresholds
    Ions
    valence
    Orbital calculations
    Molecular orbitals
    energy
    molecular orbitals
    ions
    Doping (additives)

    Keywords

    • Dilute magnetic oxide
    • Mn- and Fe-codoped In O
    • Molecular orbital calculations
    • Photoemission yield spectroscopy

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Electronic, Optical and Magnetic Materials
    • Electrical and Electronic Engineering

    Cite this

    Electronic structure analysis of Mn- and Fe-codoped In 2O 3 by photoemission yield measurements. / Yamashita, Daisuke; Yoshioka, Tsuyoshi; Nishida, So; Yamamoto, Tomoyuki.

    In: Physica B: Condensed Matter, Vol. 407, No. 22, 15.11.2012, p. 4485-4488.

    Research output: Contribution to journalArticle

    Yamashita, Daisuke ; Yoshioka, Tsuyoshi ; Nishida, So ; Yamamoto, Tomoyuki. / Electronic structure analysis of Mn- and Fe-codoped In 2O 3 by photoemission yield measurements. In: Physica B: Condensed Matter. 2012 ; Vol. 407, No. 22. pp. 4485-4488.
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    abstract = "The valence band electronic structures of Mn- and/or Fe-doped In 2O 3, i.e., In 2O 3:Mn, In 2O 3:Fe, and In 2O 3:(Mn, Fe), are investigated by photoemission yield measurements. Significant changes are observed in the threshold energy of photoemission, depending on the doped magnetic ions, which indicates that an additional occupied band appears above the top of the valence band of In 2O 3 owing to doping with Mn and/or Fe ions. It is confirmed that the order of the threshold energies of photoemission, E PET, is E PET(In 2O 3:Mn)<E PET(In 2O 3:(Mn, Fe))<E PET(In 2O 3:Fe)<E PET(In 2O 3). To gain a better understanding of these results, first-principles molecular orbital calculations are also carried out, which successfully explain the observed changes in the photoemission threshold energies.",
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    AU - Nishida, So

    AU - Yamamoto, Tomoyuki

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    N2 - The valence band electronic structures of Mn- and/or Fe-doped In 2O 3, i.e., In 2O 3:Mn, In 2O 3:Fe, and In 2O 3:(Mn, Fe), are investigated by photoemission yield measurements. Significant changes are observed in the threshold energy of photoemission, depending on the doped magnetic ions, which indicates that an additional occupied band appears above the top of the valence band of In 2O 3 owing to doping with Mn and/or Fe ions. It is confirmed that the order of the threshold energies of photoemission, E PET, is E PET(In 2O 3:Mn)<E PET(In 2O 3:(Mn, Fe))<E PET(In 2O 3:Fe)<E PET(In 2O 3). To gain a better understanding of these results, first-principles molecular orbital calculations are also carried out, which successfully explain the observed changes in the photoemission threshold energies.

    AB - The valence band electronic structures of Mn- and/or Fe-doped In 2O 3, i.e., In 2O 3:Mn, In 2O 3:Fe, and In 2O 3:(Mn, Fe), are investigated by photoemission yield measurements. Significant changes are observed in the threshold energy of photoemission, depending on the doped magnetic ions, which indicates that an additional occupied band appears above the top of the valence band of In 2O 3 owing to doping with Mn and/or Fe ions. It is confirmed that the order of the threshold energies of photoemission, E PET, is E PET(In 2O 3:Mn)<E PET(In 2O 3:(Mn, Fe))<E PET(In 2O 3:Fe)<E PET(In 2O 3). To gain a better understanding of these results, first-principles molecular orbital calculations are also carried out, which successfully explain the observed changes in the photoemission threshold energies.

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