Submillimeter and millimeter wave ESR measurements of diamond-chain substance Cu3(CO3)2(OH)2

Susumu Okubo, Tomohisa Kamikawa, Takashi Kunimoto, Yuji Inagaki, Hitoshi Ohta, Hiroyuki Nojiri, Hikomitsu Kikuchi

Research output: Contribution to journalConference articlepeer-review

8 Citations (Scopus)

Abstract

Submillimeter and millimeter wave ESR measurements of Cu 3(CO3)2(OH)2 (azurite), which is the model substance for S = 1/2 frustrated diamond chain, have been performed at 0.5 and 1.9 K. Anomalous AFMR modes, which cannot be interpreted as a simple two sublattice antiferromagnet, were observed at 0.5 K. The antiferromagnetic gaps at zero magnetic field were estimated to be 126 and 435 GHz for H//a and H//b, respectively. The observed AFMR mode is also discussed in connection with the magnetization result.

Original languageEnglish
Pages (from-to)912-913
Number of pages2
JournalJournal of Magnetism and Magnetic Materials
Volume272-276
DOIs
Publication statusPublished - 2004 May
Externally publishedYes
EventProceedings of the International Conference on Magnetism - Rome, Italy
Duration: 2003 Jul 272003 Aug 1

Keywords

  • AFMR
  • Azurite
  • Cu(CO)(OH)
  • Diamond chain
  • Frustration
  • Quantum spin chain
  • Submillimeter wave ESR

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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