Spin-1/2 Kagome Like Lattice in Volborthite Cu3V2O7(OH)2-H2O

Z. Hiroi; M. Hanawa; N. Kobayashi; M. Nohara; H. Takagi; Y. Kato; M. Takigawa

doi:10.1143/JPSJ.70.3377

Spin-1/2 Kagome Like Lattice in Volborthite Cu3V2O7(OH)2-H2O

Strongly Correlated Electrons 2009-11-07 v2

Authors: Z. Hiroi , M. Hanawa , N. Kobayashi , M. Nohara , H. Takagi , Y. Kato , M. Takigawa

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

A novel cuprate Volborthite, Cu3V2O7(OH)2-2H2O, containing an S-1/2 (Cu 2+ spin) kagome-like lattice is studied by magnetic susceptibility, specific heat, and 51 V NMR measurements. Signs for neither long-range order nor spin-gapped singlet ground states are detected down to 1.8 K, in spite of large antiferromagnetic couplings of ~100 K between Cu spins forming a two-dimensional kagome-like network. It is suggested that Volborthite represents a system close to a quantum critical point between classical long-range ordered and quantum disordered phases.

Keywords

kagome lattice volborthite quantum critical point spin-1/2 antiferromagnetic coupling NMR

Cite

@article{arxiv.cond-mat/0111127,
  title  = {Spin-1/2 Kagome Like Lattice in Volborthite Cu3V2O7(OH)2-H2O},
  author = {Z. Hiroi and M. Hanawa and N. Kobayashi and M. Nohara and H. Takagi and Y. Kato and M. Takigawa},
  journal= {arXiv preprint arXiv:cond-mat/0111127},
  year   = {2009}
}

Comments

9 pages, 8 figures, J. Phys. Soc. Jpn, in press

Spin-1/2 Kagome Like Lattice in Volborthite Cu3V2O7(OH)2-H2O

Abstract

Keywords

Cite

Comments

Related papers