Orbital ordering and spin-singlet clusters in triangular-based vanadates

Yasuhiro Shimizu, Kenichiro Matsudaira, Masayuki Itoh, Tomomasa Kajita, Miho Ikeda, Jun Miyazaki, Takuro Katsufuji

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    Abstract

    We report 51V NMR spectra in the triangular-lattice vanadates, AV10O15, (3d2.2), AV13O18 (3d2.38), and A2V13O22 (3d 1.92) (A = Ba, Sr). These compounds have orbital degrees of freedom and itinerant electrons arising from the partially occupied t2g bands. We show microscopic observations of spin-singlet trimers and antiferromagnetic tertramers with orbital orders in BaV10O 15, but no indication of the orbital order and the spin singlet in SrV10O15. The paramagnetic and nonmagnetic spins coexist in BaV13O22 but only the nonmagnetic spins are present in AV13O18 (A = Ba, Sr). The spin singlet formation in the incommensurate band filling is understood as the incommensurate charge-density wave induced by the 3d orbital order.

    Original languageEnglish
    Article number032085
    JournalJournal of Physics: Conference Series
    Volume400
    Issue numberPART 3
    DOIs
    Publication statusPublished - 2012

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    vanadates
    orbitals
    trimers
    indication
    degrees of freedom
    nuclear magnetic resonance
    electrons

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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    Orbital ordering and spin-singlet clusters in triangular-based vanadates. / Shimizu, Yasuhiro; Matsudaira, Kenichiro; Itoh, Masayuki; Kajita, Tomomasa; Ikeda, Miho; Miyazaki, Jun; Katsufuji, Takuro.

    In: Journal of Physics: Conference Series, Vol. 400, No. PART 3, 032085, 2012.

    Research output: Contribution to journalArticle

    Shimizu, Yasuhiro ; Matsudaira, Kenichiro ; Itoh, Masayuki ; Kajita, Tomomasa ; Ikeda, Miho ; Miyazaki, Jun ; Katsufuji, Takuro. / Orbital ordering and spin-singlet clusters in triangular-based vanadates. In: Journal of Physics: Conference Series. 2012 ; Vol. 400, No. PART 3.
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    AU - Shimizu, Yasuhiro

    AU - Matsudaira, Kenichiro

    AU - Itoh, Masayuki

    AU - Kajita, Tomomasa

    AU - Ikeda, Miho

    AU - Miyazaki, Jun

    AU - Katsufuji, Takuro

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