Low-temperature study of the quantum critical phenomena in CuGeO 3:Fe

S. V. Demishev, A. V. Semeno, A. A. Pronin, N. E. Sluchanko, N. A. Samarin, H. Ohta, S. Okubo, M. Kimata, K. Koyama, M. Motokawa, A. V. Kuznetsov

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)

Abstract

For the CuGeO3 single crystals doped with 1% of Fe the quantum critical behavior in a wide temperature range 1-40 K is reported. The critical exponents for susceptibility along different crystallographic axes are determined: α=0.34 (B||a and B||c) and α=0.31 (B||b). The description of the temperature dependences of the linewidth and g-factor could be obtained in the Oshikawa-Affleck theory assuming that staggered component of the magnetic moment is located predominantly along b-axis. Possible arguments favoring the competition between effects of the staggered field and antiferromagnetic ordering are provided.

Original languageEnglish
Pages (from-to)e346-e349
JournalJournal of Magnetism and Magnetic Materials
Volume300
Issue number1
DOIs
Publication statusPublished - 2006 May
Externally publishedYes
EventThird International Symposium on Magnetism 2005 -
Duration: 2005 Jun 262005 Jun 30

Keywords

  • CuGeO
  • EPR
  • Quantum critical phenomena

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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