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)


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
Issue numberSPEC. ISS.
Publication statusPublished - 2005 Apr 30


  • CuGeO
  • EPR
  • Quantum critical phenomena


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