Magnetization “Steps” on a Kagome Lattice in Volborthite

• Yoshida Hiroyuki

  Institute for Solid State Physics, University of Tokyo

• Okamoto Yoshihiko

  Institute for Solid State Physics, University of Tokyo

• Tayama Takashi

  Institute for Solid State Physics, University of Tokyo

• Sakakibara Toshiro

  Institute for Solid State Physics, University of Tokyo

• Tokunaga Masashi

  Institute for Solid State Physics, University of Tokyo

• Matsuo Akira

  Institute for Solid State Physics, University of Tokyo

• Narumi Yasuo

  Institute for Solid State Physics, University of Tokyo

• Kindo Koichi

  Institute for Solid State Physics, University of Tokyo

• Yoshida Makoto

  Institute for Solid State Physics, University of Tokyo

• Takigawa Masashi

  Institute for Solid State Physics, University of Tokyo

• Hiroi Zenji

  Institute for Solid State Physics, University of Tokyo

Abstract

Magnetic properties of the spin-1/2 kagome-like compound volborthite are studied using a high-quality polycrystalline sample. It is evidenced from magnetization and specific heat measurements that the spins on the kagome lattice still fluctuate at low temperature, down to T=60 mK that corresponds to 1/1500 of the nearest-neighbor antiferromagnetic interaction, exhibiting neither a conventional long-range order nor a spin gap. In contrast, ⁵¹V NMR experiments revealed a sharp peak at 1 K in relaxation rate, which indicates that a certain exotic order occurs. Surprisingly, we have observed three “steps” in magnetization as a function of magnetic field, suggesting that at least four liquid-like or other quantum states exist under magnetic fields.

Journal

• Journal of the Physical Society of Japan

  Journal of the Physical Society of Japan 78 (4), 043704-043704, 2009

  THE PHYSICAL SOCIETY OF JAPAN

Keywords

• kagome lattice
• spin liquid
• magnetization step
• volborthite

Details

• CRID: 1390282679172970752
• NII Article ID: 130005437396
• NII Article ID: 10025959132
• NII Article ID: 210000107757
• NII Book ID: AA00704814
• DOI: 10.1143/jpsj.78.043704
• ISSN: 13474073
• ISSN: 00319015
• NDL BIB ID: 10206425
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10206425
• Web Site: https://journals.jps.jp/doi/pdf/10.1143/JPSJ.78.043704
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed