Local spin susceptibility in the orbital-frustrated vanadium oxide BaV 10O15

Yasuhiro Shimizu, Ken Ichiro Matsudaira, Masayuki Itoh, Tomomasa Kajita, Takuro Katsufuji

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    Abstract

    BaV10O15 having a bilayer triangular lattice exhibits a semiconductor-insulator transition accompanied by the structural phase transition at Tc ∼130 K. We show the microscopic properties of the phase transition investigated by 51V NMR measurements on a single crystal. We have observed 51V NMR spectra from two of the three inequivalent V sites at high temperatures. The Knight shift tensors are determined at 300 K for the two V sites. The local spin susceptibility strongly depends on the V sites and temperature despite the nearly independent magnetic susceptibility. Each spectrum is split into two below 200 K far above T c, suggesting a charge/order ordering transition. The local spin susceptibilities of the three sites gradually vanish with decreasing temperature, consistent with the V trimer formation. The microscopic evidence for the spin singlet state is clearly observed below Tc.

    Original languageEnglish
    Article number012071
    JournalJournal of Physics: Conference Series
    Volume320
    DOIs
    Publication statusPublished - 2011

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    vanadium oxides
    magnetic permeability
    orbitals
    nuclear magnetic resonance
    trimers
    insulators
    tensors
    temperature
    single crystals

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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    Local spin susceptibility in the orbital-frustrated vanadium oxide BaV 10O15 . / Shimizu, Yasuhiro; Matsudaira, Ken Ichiro; Itoh, Masayuki; Kajita, Tomomasa; Katsufuji, Takuro.

    In: Journal of Physics: Conference Series, Vol. 320, 012071, 2011.

    Research output: Contribution to journalArticle

    Shimizu, Yasuhiro ; Matsudaira, Ken Ichiro ; Itoh, Masayuki ; Kajita, Tomomasa ; Katsufuji, Takuro. / Local spin susceptibility in the orbital-frustrated vanadium oxide BaV 10O15 In: Journal of Physics: Conference Series. 2011 ; Vol. 320.
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    AU - Katsufuji, Takuro

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