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

Zenji Hiroi, Masafumi Hanawa, Naoya Kobayashi, Minoru Nohara, Hidenori Takagi, Yoshitomo Kato, Masashi Takigawa

Research output: Contribution to journalArticle

201 Citations (Scopus)

Abstract

A novel cuprate Volborthite. Cu3V2O7(OH)2·2H2O. containing an S-1/2 (Cu2+ spin) kagomé-like lattice is studied by magnetic susceptibility, specific heat, and 51V 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 kagomé-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.

Original languageEnglish
Pages (from-to)3377-3384
Number of pages8
JournalJournal of the Physical Society of Japan
Volume70
Issue number11
DOIs
Publication statusPublished - Nov 2001
Externally publishedYes

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cuprates
critical point
specific heat
magnetic permeability
nuclear magnetic resonance
ground state

Keywords

  • Cuprate
  • Kagomé
  • Lattice
  • Magnetic susceptibility
  • NMR
  • Specific heat

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Hiroi, Z., Hanawa, M., Kobayashi, N., Nohara, M., Takagi, H., Kato, Y., & Takigawa, M. (2001). Spin-1/2 Kagomé-Like Lattice in Volborthite Cu3V2O7(OH)2·2H2O. Journal of the Physical Society of Japan, 70(11), 3377-3384. https://doi.org/10.1143/JPSJ.70.3377

Spin-1/2 Kagomé-Like Lattice in Volborthite Cu3V2O7(OH)2·2H2O. / Hiroi, Zenji; Hanawa, Masafumi; Kobayashi, Naoya; Nohara, Minoru; Takagi, Hidenori; Kato, Yoshitomo; Takigawa, Masashi.

In: Journal of the Physical Society of Japan, Vol. 70, No. 11, 11.2001, p. 3377-3384.

Research output: Contribution to journalArticle

Hiroi, Z, Hanawa, M, Kobayashi, N, Nohara, M, Takagi, H, Kato, Y & Takigawa, M 2001, 'Spin-1/2 Kagomé-Like Lattice in Volborthite Cu3V2O7(OH)2·2H2O', Journal of the Physical Society of Japan, vol. 70, no. 11, pp. 3377-3384. https://doi.org/10.1143/JPSJ.70.3377
Hiroi, Zenji ; Hanawa, Masafumi ; Kobayashi, Naoya ; Nohara, Minoru ; Takagi, Hidenori ; Kato, Yoshitomo ; Takigawa, Masashi. / Spin-1/2 Kagomé-Like Lattice in Volborthite Cu3V2O7(OH)2·2H2O. In: Journal of the Physical Society of Japan. 2001 ; Vol. 70, No. 11. pp. 3377-3384.
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abstract = "A novel cuprate Volborthite. Cu3V2O7(OH)2·2H2O. containing an S-1/2 (Cu2+ spin) kagom{\'e}-like lattice is studied by magnetic susceptibility, specific heat, and 51V 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 kagom{\'e}-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.",
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