Coupling between Mott excitation and d-d transitions in CoV2 O4

H. Nishihara, A. Furuhashi, N. Yamaguchi, R. Koborinai, Takuro Katsufuji

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    We studied the optical properties of CoV2O4, in which a broad spectrum arising from the Mott excitation of the V d states and sharp peaks from the intra-atomic d-d transitions in the Co ions coexist. We found that the width of the d-d transition peaks decreases and that Fano resonance appears in the steady-state optical spectrum with decreasing temperature. We also found that the width of the d-d transition peaks increases less than 1 ps after a pump pulse is applied to the Mott excitation. These results indicate that the Mott excitation and the d-d transitions are strongly coupled in this compound.

    Original languageEnglish
    Article number140401
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume92
    Issue number14
    DOIs
    Publication statusPublished - 2015 Oct 1

      Fingerprint

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Electronic, Optical and Magnetic Materials

    Cite this