Electronic phase transition in hollandite titanates BaxTi8 O16+δ

R. Murata, T. Sato, T. Okuda, Y. Horibe, H. Tsukasaki, S. Mori, N. Yamaguchi, K. Sugimoto, S. Kawaguchi, M. Takata, Takuro Katsufuji

    Research output: Contribution to journalArticle

    9 Citations (Scopus)

    Abstract

    We studied the physical properties of hollandite titanates, BaxTi8O16+δ, which have double chains of edge-sharing TiO6 octahedra with d electrons in the t2g states. We found that there is an electronic phase transition at ∼220 K, at which various properties exhibit anomalies. This phase transition is characterized by a modulation in the TiO6 chains and a spectral weight transfer of over 2 eV in the optical conductivity spectrum, which are presumably caused by charge and orbital ordering of the Ti t2g electrons.

    Original languageEnglish
    Article number220407
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume92
    Issue number22
    DOIs
    Publication statusPublished - 2015 Dec 14

    Fingerprint

    titanates
    Phase transitions
    Optical conductivity
    Electrons
    electronics
    electrons
    Physical properties
    physical properties
    Modulation
    anomalies
    modulation
    orbitals
    conductivity

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Electronic, Optical and Magnetic Materials

    Cite this

    Electronic phase transition in hollandite titanates BaxTi8 O16+δ. / Murata, R.; Sato, T.; Okuda, T.; Horibe, Y.; Tsukasaki, H.; Mori, S.; Yamaguchi, N.; Sugimoto, K.; Kawaguchi, S.; Takata, M.; Katsufuji, Takuro.

    In: Physical Review B - Condensed Matter and Materials Physics, Vol. 92, No. 22, 220407, 14.12.2015.

    Research output: Contribution to journalArticle

    Murata, R, Sato, T, Okuda, T, Horibe, Y, Tsukasaki, H, Mori, S, Yamaguchi, N, Sugimoto, K, Kawaguchi, S, Takata, M & Katsufuji, T 2015, 'Electronic phase transition in hollandite titanates BaxTi8 O16+δ', Physical Review B - Condensed Matter and Materials Physics, vol. 92, no. 22, 220407. https://doi.org/10.1103/PhysRevB.92.220408
    Murata, R. ; Sato, T. ; Okuda, T. ; Horibe, Y. ; Tsukasaki, H. ; Mori, S. ; Yamaguchi, N. ; Sugimoto, K. ; Kawaguchi, S. ; Takata, M. ; Katsufuji, Takuro. / Electronic phase transition in hollandite titanates BaxTi8 O16+δ. In: Physical Review B - Condensed Matter and Materials Physics. 2015 ; Vol. 92, No. 22.
    @article{907d36c4b36b42658d401b4eec35d9ce,
    title = "Electronic phase transition in hollandite titanates BaxTi8 O16+δ",
    abstract = "We studied the physical properties of hollandite titanates, BaxTi8O16+δ, which have double chains of edge-sharing TiO6 octahedra with d electrons in the t2g states. We found that there is an electronic phase transition at ∼220 K, at which various properties exhibit anomalies. This phase transition is characterized by a modulation in the TiO6 chains and a spectral weight transfer of over 2 eV in the optical conductivity spectrum, which are presumably caused by charge and orbital ordering of the Ti t2g electrons.",
    author = "R. Murata and T. Sato and T. Okuda and Y. Horibe and H. Tsukasaki and S. Mori and N. Yamaguchi and K. Sugimoto and S. Kawaguchi and M. Takata and Takuro Katsufuji",
    year = "2015",
    month = "12",
    day = "14",
    doi = "10.1103/PhysRevB.92.220408",
    language = "English",
    volume = "92",
    journal = "Physical Review B-Condensed Matter",
    issn = "0163-1829",
    publisher = "American Institute of Physics Publising LLC",
    number = "22",

    }

    TY - JOUR

    T1 - Electronic phase transition in hollandite titanates BaxTi8 O16+δ

    AU - Murata, R.

    AU - Sato, T.

    AU - Okuda, T.

    AU - Horibe, Y.

    AU - Tsukasaki, H.

    AU - Mori, S.

    AU - Yamaguchi, N.

    AU - Sugimoto, K.

    AU - Kawaguchi, S.

    AU - Takata, M.

    AU - Katsufuji, Takuro

    PY - 2015/12/14

    Y1 - 2015/12/14

    N2 - We studied the physical properties of hollandite titanates, BaxTi8O16+δ, which have double chains of edge-sharing TiO6 octahedra with d electrons in the t2g states. We found that there is an electronic phase transition at ∼220 K, at which various properties exhibit anomalies. This phase transition is characterized by a modulation in the TiO6 chains and a spectral weight transfer of over 2 eV in the optical conductivity spectrum, which are presumably caused by charge and orbital ordering of the Ti t2g electrons.

    AB - We studied the physical properties of hollandite titanates, BaxTi8O16+δ, which have double chains of edge-sharing TiO6 octahedra with d electrons in the t2g states. We found that there is an electronic phase transition at ∼220 K, at which various properties exhibit anomalies. This phase transition is characterized by a modulation in the TiO6 chains and a spectral weight transfer of over 2 eV in the optical conductivity spectrum, which are presumably caused by charge and orbital ordering of the Ti t2g electrons.

    UR - http://www.scopus.com/inward/record.url?scp=84950336439&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=84950336439&partnerID=8YFLogxK

    U2 - 10.1103/PhysRevB.92.220408

    DO - 10.1103/PhysRevB.92.220408

    M3 - Article

    VL - 92

    JO - Physical Review B-Condensed Matter

    JF - Physical Review B-Condensed Matter

    SN - 0163-1829

    IS - 22

    M1 - 220407

    ER -