Photoinduced dynamics of spinel MnV 2 O 4

K. Takubo, Y. Onishi, A. Furuhashi, A. Nogami, Takuro Katsufuji

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    By pump-probe optical reflectivity measurements, we studied the photoinduced dynamics of MnV2O4, which is a d2 Mott insulator and exhibits a simultaneous spin and orbital ordering accompanied by a structural phase transition at 57 K. We compared the present experimental results with the results of the steady-state optical measurement of the same compound and the steady-state and pump-probe optical measurements of Al-doped MnV2O4, in which the orbital ordering and structural phase transition are absent but the magnetic ordering exists. We found that the photoinduced dynamics of MnV2O4 can be separated into three components: (1) the suppression of the Mott-excitation peak, (2) the melting of the orbital ordering, and (3) the melting of the magnetic ordering. Furthermore, we found that the lattice distortion associated with the photoinduced structural phase transition from tetragonal to cubic induces a strain wave whose propagation velocity is discernibly smaller than that of a conventional shockwave.

    Original languageEnglish
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume88
    Issue number21
    DOIs
    Publication statusPublished - 2013 Dec 16

    Fingerprint

    spinel
    Phase transitions
    optical measurement
    orbitals
    Magnetization
    Melting
    melting
    Pumps
    pumps
    probes
    propagation velocity
    Wave propagation
    wave propagation
    retarding
    insulators
    reflectance
    excitation
    spinell

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Electronic, Optical and Magnetic Materials

    Cite this

    Photoinduced dynamics of spinel MnV 2 O 4. / Takubo, K.; Onishi, Y.; Furuhashi, A.; Nogami, A.; Katsufuji, Takuro.

    In: Physical Review B - Condensed Matter and Materials Physics, Vol. 88, No. 21, 16.12.2013.

    Research output: Contribution to journalArticle

    Takubo, K. ; Onishi, Y. ; Furuhashi, A. ; Nogami, A. ; Katsufuji, Takuro. / Photoinduced dynamics of spinel MnV 2 O 4. In: Physical Review B - Condensed Matter and Materials Physics. 2013 ; Vol. 88, No. 21.
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