Disorder-driven quantum critical behaviour in CuGeO3 doped with magnetic impurity

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

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

For the CuGeO3 doped with 1% of Fe, the quantum critical behaviour 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). New effect of the frequency dependence of the critical exponent is discussed.

Original languageEnglish
Pages (from-to)1315-1317
Number of pages3
JournalPhysica B: Condensed Matter
Volume359-361
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 2005 Apr 30

Keywords

  • CuGeO
  • EPR
  • Quantum critical phenomena

ASJC Scopus subject areas

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

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