Bond-randomness effect on the quantum spin system Tl1 - x Kx CuCl3 probed by muon-spin-relaxation method

Takao Suzuki, Fumiko Yamada, Isao Watanabe, Takayuki Goto, Akira Oosawa, Hidekazu Tanaka

Research output: Contribution to journalArticle

Abstract

Muon-spin-relaxation (μ SR) measurements were carried out on the randomness-introduced quantum spin system Tl1 - x Kx CuCl3. Zero-field μ SR measurement results reveal that the rapid increase of the μ SR rate λ with decreasing temperature in the case of x = 0.58. From the result of longitudinal-field μ SR measurements, a finite relaxation remains at 4000 G, which means that Cu - 3 d spins fluctuate down to 20 mK although the slowing down of the frequency of the spin fluctuation occurs. These results suggest that there is a quite possibility of the existence of an ordered or spin frozen phase in a neighboring concentration of x around 0.58.

Original languageEnglish
Pages (from-to)590-593
Number of pages4
JournalPhysica B: Condensed Matter
Volume404
Issue number5-7
DOIs
Publication statusPublished - 2009 Apr 15
Externally publishedYes

Keywords

  • Quantum spin system
  • Randomness
  • Tl K CuCl
  • μ SR

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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