Vesignieite BaCu_3V_2O_8(OH)_2 as a Candidate Spin-1/2 Kagome Antiferromagnet

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Author(s)

Abstract

A polycrystalline sample of vesignieite BaCu_3V_2O_8(OH)_2 comprising a nearly ideal kagome lattice composed of Cu^<2+> ions carrying spin 1/2 has been synthesized and studied by magnetization and heat capacity measurements. Magnetic susceptibility shows a neither long range order, a spin glass transition nor a spin gap down to 2K, in spite of a moderately strong antiferromagnetic interaction of J/k_B=53K between nearest-neighbor spins. A broad peak observed at a temperature corresponding to 0.4J in intrinsic magnetic susceptibility indicates a marked development of the short-range order. The ground state of vesignieite is probably a gapless spin liquid or is accompanied by a very small gap less than 〜J/30.

Journal

  • Journal of the Physical Society of Japan

    Journal of the Physical Society of Japan 78(3), "33701-1"-"33701-4", 2009-03-15

    The Physical Society of Japan (JPS)

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Codes

  • NII Article ID (NAID)
    110007138891
  • NII NACSIS-CAT ID (NCID)
    AA00704814
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    00319015
  • NDL Article ID
    10182669
  • NDL Source Classification
    ZM35(科学技術--物理学)
  • NDL Call No.
    Z53-A404
  • Data Source
    CJP  NDL  NII-ELS 
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