Photoinduced dynamics in spinel and pyrochlore vanadates as Mott-Hubbard insulators with magnetic ordering

A. Furuhashi, H. Nishihara, K. Takubo, Takuro Katsufuji

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    We studied the photoinduced dynamics of spinel MnV1.8Al 0.2O4 and pyrochlore Yb2V2O 7 as prototypical Mott-Hubbard insulators with magnetic ordering. We found that the Mott excitation spectrum is suppressed much sooner than 1 ps after photoirradiation, and subsequently it shows an energy shift over several or several tens of picoseconds, which is caused by the melting of magnetic ordering. This indicates that the Mott excitation spectrum is dominated not only by the Coulomb repulsion energy but also by magnetic interactions, and their different energy scales lead to the different time scales in the photoinduced dynamics.

    Original languageEnglish
    Article number060410
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume88
    Issue number6
    DOIs
    Publication statusPublished - 2013 Aug 30

    Fingerprint

    Vanadates
    vanadates
    spinel
    Magnetization
    insulators
    Melting
    excitation
    energy
    melting
    shift
    pyrochlore
    spinell
    interactions

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Electronic, Optical and Magnetic Materials

    Cite this

    Photoinduced dynamics in spinel and pyrochlore vanadates as Mott-Hubbard insulators with magnetic ordering. / Furuhashi, A.; Nishihara, H.; Takubo, K.; Katsufuji, Takuro.

    In: Physical Review B - Condensed Matter and Materials Physics, Vol. 88, No. 6, 060410, 30.08.2013.

    Research output: Contribution to journalArticle

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