Spin-dependent charge dynamics of an orbital-spin-coupled system: Yb2 V2 O7

K. Waku, T. Suzuki, Takuro Katsufuji

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    Optical conductivity spectra of ferromagnetic pyrochlore vanadate Yb2 V2 O7 were investigated under a variation of both temperature and magnetic field. It was found that the spectrum of a Mott-gap excitation, a d - d transition between neighboring V sites, exhibits spectral weight transfer to lower energies with ferromagnetic ordering as well as an applied magnetic field. This result indicates that charge dynamics is influenced by the spin state in this prototypical orbital-spin-coupled system.

    Original languageEnglish
    Article number024402
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume74
    Issue number2
    DOIs
    Publication statusPublished - 2006

    Fingerprint

    Magnetic fields
    Optical conductivity
    orbitals
    Vanadates
    vanadates
    magnetic fields
    Temperature distribution
    temperature distribution
    conductivity
    excitation
    energy
    pyrochlore

    ASJC Scopus subject areas

    • Condensed Matter Physics

    Cite this

    Spin-dependent charge dynamics of an orbital-spin-coupled system : Yb2 V2 O7. / Waku, K.; Suzuki, T.; Katsufuji, Takuro.

    In: Physical Review B - Condensed Matter and Materials Physics, Vol. 74, No. 2, 024402, 2006.

    Research output: Contribution to journalArticle

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    abstract = "Optical conductivity spectra of ferromagnetic pyrochlore vanadate Yb2 V2 O7 were investigated under a variation of both temperature and magnetic field. It was found that the spectrum of a Mott-gap excitation, a d - d transition between neighboring V sites, exhibits spectral weight transfer to lower energies with ferromagnetic ordering as well as an applied magnetic field. This result indicates that charge dynamics is influenced by the spin state in this prototypical orbital-spin-coupled system.",
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    AB - Optical conductivity spectra of ferromagnetic pyrochlore vanadate Yb2 V2 O7 were investigated under a variation of both temperature and magnetic field. It was found that the spectrum of a Mott-gap excitation, a d - d transition between neighboring V sites, exhibits spectral weight transfer to lower energies with ferromagnetic ordering as well as an applied magnetic field. This result indicates that charge dynamics is influenced by the spin state in this prototypical orbital-spin-coupled system.

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