μSR Study of Cu Benzoate at Very Low Temperature - Existence or Nonexistence of Long Range Order in Coupled Chains

Takayuki Asano, Hiroyuki Nojiri, Wataru Higemoto, Akihiro Koda, Ryosuke Kadono, Yoshitami Ajiro

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

Zero-, longitudinal- and transverse-field μSR experiments are performed for a linear chain antiferromagnet Cu benzoate, Cu(C6H 5COO)·3H2O, and no long range order (LRO) is found down to 20 mK. The upper limit of the ratio of the Néel temperature to the exchange coupling, kBTN/J < 0.002, is even better than that of Sr2CuO3, which is known as the best candidate of S = 1/2 antiferromagnetic Heisenberg quantum spin chain. Significance of our findings is discussed in view of whether there is a non-zero critical coupling ratio necessary for LRO in coupled Heisenberg chains.

Original languageEnglish
Pages (from-to)594-598
Number of pages5
Journaljournal of the physical society of japan
Volume71
Issue number2
DOIs
Publication statusPublished - 2002 Feb 1
Externally publishedYes

Keywords

  • Cu benzoate
  • One-dimensionality
  • Quantum spin chain
  • μSR

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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